{"id":3364,"date":"2023-10-05T08:00:44","date_gmt":"2023-10-05T08:00:44","guid":{"rendered":"http:\/\/localhost\/ecole9ja\/?p=3364"},"modified":"2023-10-05T08:03:51","modified_gmt":"2023-10-05T08:03:51","slug":"week-7-ss2-third-term-chemistry-notes","status":"publish","type":"post","link":"https:\/\/ecolebooks.com\/nigeria\/posts\/week-7-ss2-third-term-chemistry-notes\/","title":{"rendered":"Week 7 &#8211; SS2 Third Term Chemistry Notes"},"content":{"rendered":"<p>\u00a0<strong>WEEK SEVEN<br \/>\n<\/strong><strong>TOPIC: ALKENES<br \/>\n<\/strong><strong>CONTENT<br \/>\n<\/strong><\/p>\n<ul>\n<li>Nomenclature\n<\/li>\n<li>\n<div>Preparation, Properties and Uses.\n<\/div>\n<p>\u00a0<\/li>\n<\/ul>\n<p><strong>UNSATURATED HYDROCARBONS<br \/>\n<\/strong>These are hydrocarbons in which carbon atoms join with each other by multiple bonds.  The multiple bonds can be double bonds e.gAlkenes or triple bonds e.gAlkynes.<\/p>\n<p>\u00a0<strong>NOMENCLATURE<br \/>\n<\/strong>The process of naming in alkenes is obtained by substituting &#8220;ane&#8221; in alkane with &#8216;ene&#8217; e.g Ethane changes to Ethene, propane to propene<\/p>\n<p>\u00a0<strong>LABORATORY PREPARATION<br \/>\n<\/strong>Ethene is prepared by heating ethanol with excess concentrated tetraoxosulphate(VI) acid at 170<sup>o <\/sup>C. The acid acts as a dehydrating agent by removing water from the ethanol.  \u00a0Thus the process is called dehydration.<\/p>\n<p>\u00a0The reaction occurs in two stages<br \/>\n<img decoding=\"async\" align=\"left\" src=\"https:\/\/ecolebooks.com\/nigeria\/wp-content\/uploads\/9jalessonsimages\/100523_0800_Week7SS2Th1.png\" alt=\"\"\/>\u00a0\u00a0\u00a0\u00a0C<sub>2<\/sub>H<sub>5<\/sub>OH<sub>(aq)<\/sub>  + H<sub>2<\/sub>SO<sub>4(aq)<\/sub>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0C<sub>2<\/sub>H<sub>5<\/sub>HSO<sub>4(aq)<\/sub> + H<sub>2<\/sub>O<sub>(l)<\/sub><br \/>\n\t<img decoding=\"async\" align=\"left\" src=\"https:\/\/ecolebooks.com\/nigeria\/wp-content\/uploads\/9jalessonsimages\/100523_0800_Week7SS2Th2.png\" alt=\"\"\/>\u00a0\u00a0\u00a0\u00a0C<sub>2<\/sub>H<sub>5<\/sub>HSO<sub>4(aq)<\/sub>               C<sub>2<\/sub>H<sub>4(g)<\/sub>  + H<sub>2<\/sub>SO<sub>4<\/sub>.<br \/>\nThe overall reaction is represented by the equation<\/p>\n<p>\u00a0<img decoding=\"async\" align=\"left\" src=\"https:\/\/ecolebooks.com\/nigeria\/wp-content\/uploads\/9jalessonsimages\/100523_0800_Week7SS2Th3.png\" alt=\"\"\/>C<sub>2<\/sub>H<sub>5<\/sub>OH(aq)<sup>H<\/sup><sub>2<\/sub><sup>SO<\/sup><sub>4<\/sub>C<sub>2<\/sub>H<sub>4(g)<\/sub>  + H<sub>2<\/sub>SO<sub>4(aq)<\/sub><br \/>\n\t\u00a0\u00a0\u00a0\u00a0-H<sub>2<\/sub>O <\/p>\n<p>\u00a0<strong>PHYSICAL PROPERTIES<br \/>\n<\/strong>1.\u00a0\u00a0\u00a0\u00a0Ethene is a colourless gas with faint sweetish smell.<br \/>\n2.      It is sparingly soluble in water.<br \/>\n3.      It is slightly less dense than air.<br \/>\n4.      It has no action on litmus paper.<\/p>\n<p>\u00a0<strong>Evaluation<\/strong><\/p>\n<ol>\n<li>How would you prepare a jar of ethene gas in the laboratory?\n<\/li>\n<li>Mention four physical properties of Ethene.\n<\/li>\n<\/ol>\n<p>\u00a0<strong>CHEMCIAL PROPERTIES<\/strong><br \/>\n\t1.\u00a0\u00a0\u00a0\u00a0Combustion: Ethene undergoes combustion in air or in the presence of oxygen and produce carbon (IV) oxide and steam.<br \/>\n<img decoding=\"async\" align=\"left\" src=\"https:\/\/ecolebooks.com\/nigeria\/wp-content\/uploads\/9jalessonsimages\/100523_0800_Week7SS2Th4.png\" alt=\"\"\/>\u00a0\u00a0\u00a0\u00a0C<sub>2<\/sub>H<sub>4(g)<\/sub> +  3O<sub>2(g)<\/sub>               2CO<sub>2(g) <\/sub> + 2H<sub>2<\/sub>O<sub>(l)<\/sub><br \/>\n\t2.\u00a0\u00a0\u00a0\u00a0Addition reaction: This is a reaction in which two molecules combine to form one molecule.<br \/>\n\u00a0\u00a0\u00a0\u00a0a. Reaction with hydrogen (Hydrogenation):<br \/>\n<img decoding=\"async\" align=\"left\" src=\"https:\/\/ecolebooks.com\/nigeria\/wp-content\/uploads\/9jalessonsimages\/100523_0800_Week7SS2Th5.png\" alt=\"\"\/><img decoding=\"async\" align=\"left\" src=\"https:\/\/ecolebooks.com\/nigeria\/wp-content\/uploads\/9jalessonsimages\/100523_0800_Week7SS2Th6.png\" alt=\"\"\/><img decoding=\"async\" align=\"left\" src=\"https:\/\/ecolebooks.com\/nigeria\/wp-content\/uploads\/9jalessonsimages\/100523_0800_Week7SS2Th7.png\" alt=\"\"\/><img decoding=\"async\" align=\"left\" src=\"https:\/\/ecolebooks.com\/nigeria\/wp-content\/uploads\/9jalessonsimages\/100523_0800_Week7SS2Th8.png\" alt=\"\"\/>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0H    H\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0H\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0H<br \/>\n<img decoding=\"async\" align=\"left\" src=\"https:\/\/ecolebooks.com\/nigeria\/wp-content\/uploads\/9jalessonsimages\/100523_0800_Week7SS2Th9.png\" alt=\"\"\/><br \/>\n\t<img decoding=\"async\" align=\"left\" src=\"https:\/\/ecolebooks.com\/nigeria\/wp-content\/uploads\/9jalessonsimages\/100523_0800_Week7SS2Th10.png\" alt=\"\"\/><img decoding=\"async\" align=\"left\" src=\"https:\/\/ecolebooks.com\/nigeria\/wp-content\/uploads\/9jalessonsimages\/100523_0800_Week7SS2Th11.png\" alt=\"\"\/>  H-C= C \u2013   H   +  H<sub>2<\/sub> H &#8211;   C  &#8211;     C \u2013 H<br \/>\nEthene<br \/>\n\u00a0\u00a0\u00a0\u00a0H         H          Ethane<br \/>\nb.   Reaction with halogens (Halogenation):<br \/>\n<img decoding=\"async\" align=\"left\" src=\"https:\/\/ecolebooks.com\/nigeria\/wp-content\/uploads\/9jalessonsimages\/100523_0800_Week7SS2Th12.png\" alt=\"\"\/><img decoding=\"async\" align=\"left\" src=\"https:\/\/ecolebooks.com\/nigeria\/wp-content\/uploads\/9jalessonsimages\/100523_0800_Week7SS2Th13.png\" alt=\"\"\/><img decoding=\"async\" align=\"left\" src=\"https:\/\/ecolebooks.com\/nigeria\/wp-content\/uploads\/9jalessonsimages\/100523_0800_Week7SS2Th14.png\" alt=\"\"\/><img decoding=\"async\" align=\"left\" src=\"https:\/\/ecolebooks.com\/nigeria\/wp-content\/uploads\/9jalessonsimages\/100523_0800_Week7SS2Th15.png\" alt=\"\"\/>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0H\u00a0\u00a0\u00a0\u00a0H\u00a0\u00a0\u00a0\u00a0HH<br \/>\n<img decoding=\"async\" align=\"left\" src=\"https:\/\/ecolebooks.com\/nigeria\/wp-content\/uploads\/9jalessonsimages\/100523_0800_Week7SS2Th16.png\" alt=\"\"\/><br \/>\n\t<img decoding=\"async\" align=\"left\" src=\"https:\/\/ecolebooks.com\/nigeria\/wp-content\/uploads\/9jalessonsimages\/100523_0800_Week7SS2Th17.png\" alt=\"\"\/><img decoding=\"async\" align=\"left\" src=\"https:\/\/ecolebooks.com\/nigeria\/wp-content\/uploads\/9jalessonsimages\/100523_0800_Week7SS2Th18.png\" alt=\"\"\/>H  &#8211;  C =  C- H  +  Cl<sub>2                   <\/sub>H &#8211; C &#8211;  C &#8211;  H<\/p>\n<p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0Ethene\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0ClCl      1,2- dichloroethane<\/p>\n<p>\u00a0c.  \u00a0\u00a0\u00a0\u00a0Reaction with hydrogen halides(Halohydrogenation):<br \/>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0H\u00a0\u00a0\u00a0\u00a0H<br \/>\n<img decoding=\"async\" align=\"left\" src=\"https:\/\/ecolebooks.com\/nigeria\/wp-content\/uploads\/9jalessonsimages\/100523_0800_Week7SS2Th19.png\" alt=\"\"\/><img decoding=\"async\" align=\"left\" src=\"https:\/\/ecolebooks.com\/nigeria\/wp-content\/uploads\/9jalessonsimages\/100523_0800_Week7SS2Th20.png\" alt=\"\"\/><img decoding=\"async\" align=\"left\" src=\"https:\/\/ecolebooks.com\/nigeria\/wp-content\/uploads\/9jalessonsimages\/100523_0800_Week7SS2Th21.png\" alt=\"\"\/>\u00a0\u00a0\u00a0\u00a0<br \/>\n<img decoding=\"async\" align=\"left\" src=\"https:\/\/ecolebooks.com\/nigeria\/wp-content\/uploads\/9jalessonsimages\/100523_0800_Week7SS2Th22.png\" alt=\"\"\/><img decoding=\"async\" align=\"left\" src=\"https:\/\/ecolebooks.com\/nigeria\/wp-content\/uploads\/9jalessonsimages\/100523_0800_Week7SS2Th23.png\" alt=\"\"\/><img decoding=\"async\" align=\"left\" src=\"https:\/\/ecolebooks.com\/nigeria\/wp-content\/uploads\/9jalessonsimages\/100523_0800_Week7SS2Th24.png\" alt=\"\"\/>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0H- C = C \u2013 H + HBr\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0    H &#8211; C\u00a0\u00a0\u00a0\u00a0C &#8211; H<br \/>\n<img decoding=\"async\" align=\"left\" src=\"https:\/\/ecolebooks.com\/nigeria\/wp-content\/uploads\/9jalessonsimages\/100523_0800_Week7SS2Th25.png\" alt=\"\"\/><img decoding=\"async\" align=\"left\" src=\"https:\/\/ecolebooks.com\/nigeria\/wp-content\/uploads\/9jalessonsimages\/100523_0800_Week7SS2Th26.png\" alt=\"\"\/>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<br \/>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0H    HH Br<br \/>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0Ethene\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0          1-bromoethane.<br \/>\nd.  \u00a0\u00a0\u00a0\u00a0Reaction with acidified \/Alkaline KMnO<sub>4<\/sub> (Hydroxylation):  It decolourises acidified KMnO<sub>4<\/sub>, but turns alkaline KMnO<sub>4<\/sub> to green and ethane -1,2- diol is formed.<br \/>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0OH\u00a0\u00a0\u00a0\u00a0\u00a0OH<br \/>\n<img decoding=\"async\" align=\"left\" src=\"https:\/\/ecolebooks.com\/nigeria\/wp-content\/uploads\/9jalessonsimages\/100523_0800_Week7SS2Th27.png\" alt=\"\"\/><img decoding=\"async\" align=\"left\" src=\"https:\/\/ecolebooks.com\/nigeria\/wp-content\/uploads\/9jalessonsimages\/100523_0800_Week7SS2Th28.png\" alt=\"\"\/><img decoding=\"async\" align=\"left\" src=\"https:\/\/ecolebooks.com\/nigeria\/wp-content\/uploads\/9jalessonsimages\/100523_0800_Week7SS2Th29.png\" alt=\"\"\/>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<br \/>\n<img decoding=\"async\" align=\"left\" src=\"https:\/\/ecolebooks.com\/nigeria\/wp-content\/uploads\/9jalessonsimages\/100523_0800_Week7SS2Th30.png\" alt=\"\"\/>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0H \u2013 C = C \u2013 H    +    KMnO<sub>4<\/sub>                       H &#8211;     C   &#8211;    C  &#8211; H<br \/>\n<img decoding=\"async\" align=\"left\" src=\"https:\/\/ecolebooks.com\/nigeria\/wp-content\/uploads\/9jalessonsimages\/100523_0800_Week7SS2Th31.png\" alt=\"\"\/><img decoding=\"async\" align=\"left\" src=\"https:\/\/ecolebooks.com\/nigeria\/wp-content\/uploads\/9jalessonsimages\/100523_0800_Week7SS2Th32.png\" alt=\"\"\/><img decoding=\"async\" align=\"left\" src=\"https:\/\/ecolebooks.com\/nigeria\/wp-content\/uploads\/9jalessonsimages\/100523_0800_Week7SS2Th33.png\" alt=\"\"\/>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<br \/>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 H     H                                                  \u00a0\u00a0\u00a0\u00a0     H        H<br \/>\n Ethane-1,2-diol (glycol)<br \/>\ne.\u00a0     Reaction with Hydrogen peroxide in the presence of osmium trioxde to form ethan -1,2- diol.<br \/>\n<img decoding=\"async\" align=\"left\" src=\"https:\/\/ecolebooks.com\/nigeria\/wp-content\/uploads\/9jalessonsimages\/100523_0800_Week7SS2Th34.png\" alt=\"\"\/>OH  OH<br \/>\n<img decoding=\"async\" align=\"left\" src=\"https:\/\/ecolebooks.com\/nigeria\/wp-content\/uploads\/9jalessonsimages\/100523_0800_Week7SS2Th35.png\" alt=\"\"\/>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<br \/>\n<img decoding=\"async\" align=\"left\" src=\"https:\/\/ecolebooks.com\/nigeria\/wp-content\/uploads\/9jalessonsimages\/100523_0800_Week7SS2Th36.png\" alt=\"\"\/>\u00a0\u00a0\u00a0\u00a0H &#8211;    C  =  C &#8211; H + H<sub>2<\/sub>O<sub>2<\/sub>          H \u2013 C &#8211;  C  &#8211; H<br \/>\n<img decoding=\"async\" align=\"left\" src=\"https:\/\/ecolebooks.com\/nigeria\/wp-content\/uploads\/9jalessonsimages\/100523_0800_Week7SS2Th37.png\" alt=\"\"\/><img decoding=\"async\" align=\"left\" src=\"https:\/\/ecolebooks.com\/nigeria\/wp-content\/uploads\/9jalessonsimages\/100523_0800_Week7SS2Th38.png\" alt=\"\"\/><img decoding=\"async\" align=\"left\" src=\"https:\/\/ecolebooks.com\/nigeria\/wp-content\/uploads\/9jalessonsimages\/100523_0800_Week7SS2Th39.png\" alt=\"\"\/><img decoding=\"async\" align=\"left\" src=\"https:\/\/ecolebooks.com\/nigeria\/wp-content\/uploads\/9jalessonsimages\/100523_0800_Week7SS2Th40.png\" alt=\"\"\/><br \/>\n\t\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0H      HHH<br \/>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0Ethane -1,2- diol.<\/p>\n<p>\u00a0f.\u00a0  Reaction with concentrated H<sub>2<\/sub>SO<sub>4<\/sub>produces a fuming liquid (ethyl hydrogen \u00a0\u00a0\u00a0 \u00a0\u00a0sulphate)<br \/>\n<img decoding=\"async\" align=\"left\" src=\"https:\/\/ecolebooks.com\/nigeria\/wp-content\/uploads\/9jalessonsimages\/100523_0800_Week7SS2Th41.png\" alt=\"\"\/>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0C<sub>2<\/sub>H<sub>4 <\/sub> + H<sub>2<\/sub>SO<sub>4   <\/sub>            C<sub>2<\/sub>H<sub>5<\/sub>HSO<sub>4<\/sub><br \/>\n\tWhen ethyl hydrogen sulphate is hydrolyzed, tetraoxosulphate (VI) acid and ethanol are produced.<br \/>\n<img decoding=\"async\" align=\"left\" src=\"https:\/\/ecolebooks.com\/nigeria\/wp-content\/uploads\/9jalessonsimages\/100523_0800_Week7SS2Th42.png\" alt=\"\"\/>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0C<sub>2<\/sub>H<sub>5<\/sub>SO<sub>4<\/sub>\u00a0\u00a0\u00a0\u00a0C<sub>2<\/sub>H<sub>5<\/sub>OH  + H<sub>2<\/sub>SO<sub>4<\/sub><\/p>\n<p>\u00a0g.    Ethene gas decolourizes bromine water to produce bromoethanol.<br \/>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0             H      H\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<br \/>\n<img decoding=\"async\" align=\"left\" src=\"https:\/\/ecolebooks.com\/nigeria\/wp-content\/uploads\/9jalessonsimages\/100523_0800_Week7SS2Th43.png\" alt=\"\"\/><img decoding=\"async\" align=\"left\" src=\"https:\/\/ecolebooks.com\/nigeria\/wp-content\/uploads\/9jalessonsimages\/100523_0800_Week7SS2Th44.png\" alt=\"\"\/><br \/>\n\t<img decoding=\"async\" align=\"left\" src=\"https:\/\/ecolebooks.com\/nigeria\/wp-content\/uploads\/9jalessonsimages\/100523_0800_Week7SS2Th45.png\" alt=\"\"\/><img decoding=\"async\" align=\"left\" src=\"https:\/\/ecolebooks.com\/nigeria\/wp-content\/uploads\/9jalessonsimages\/100523_0800_Week7SS2Th46.png\" alt=\"\"\/><img decoding=\"async\" align=\"left\" src=\"https:\/\/ecolebooks.com\/nigeria\/wp-content\/uploads\/9jalessonsimages\/100523_0800_Week7SS2Th47.png\" alt=\"\"\/>\u00a0\u00a0\u00a0\u00a0 H \u2013 C = C \u2013 H+HBrO\u00a0\u00a0\u00a0\u00a0             H \u2013 C  \u2013C &#8211;  H<br \/>\n<img decoding=\"async\" align=\"left\" src=\"https:\/\/ecolebooks.com\/nigeria\/wp-content\/uploads\/9jalessonsimages\/100523_0800_Week7SS2Th48.png\" alt=\"\"\/><img decoding=\"async\" align=\"left\" src=\"https:\/\/ecolebooks.com\/nigeria\/wp-content\/uploads\/9jalessonsimages\/100523_0800_Week7SS2Th49.png\" alt=\"\"\/><br \/>\n\t\u00a0\u00a0\u00a0\u00a0    H   H( brown)                  \u00a0\u00a0\u00a0\u00a0Br    OH<br \/>\nBromoethanol<br \/>\nh.  Polymerization of ethane to produce polythene.<br \/>\n<img decoding=\"async\" align=\"left\" src=\"https:\/\/ecolebooks.com\/nigeria\/wp-content\/uploads\/9jalessonsimages\/100523_0800_Week7SS2Th50.png\" alt=\"\"\/><img decoding=\"async\" align=\"left\" src=\"https:\/\/ecolebooks.com\/nigeria\/wp-content\/uploads\/9jalessonsimages\/100523_0800_Week7SS2Th51.png\" alt=\"\"\/><img decoding=\"async\" align=\"left\" src=\"https:\/\/ecolebooks.com\/nigeria\/wp-content\/uploads\/9jalessonsimages\/100523_0800_Week7SS2Th52.png\" alt=\"\"\/><img decoding=\"async\" align=\"left\" src=\"https:\/\/ecolebooks.com\/nigeria\/wp-content\/uploads\/9jalessonsimages\/100523_0800_Week7SS2Th53.png\" alt=\"\"\/>                H      HHHH\u00a0\u00a0\u00a0\u00a0H\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<br \/>\n<img decoding=\"async\" align=\"left\" src=\"https:\/\/ecolebooks.com\/nigeria\/wp-content\/uploads\/9jalessonsimages\/100523_0800_Week7SS2Th54.png\" alt=\"\"\/><img decoding=\"async\" align=\"left\" src=\"https:\/\/ecolebooks.com\/nigeria\/wp-content\/uploads\/9jalessonsimages\/100523_0800_Week7SS2Th55.png\" alt=\"\"\/><img decoding=\"async\" align=\"left\" src=\"https:\/\/ecolebooks.com\/nigeria\/wp-content\/uploads\/9jalessonsimages\/100523_0800_Week7SS2Th56.png\" alt=\"\"\/><img decoding=\"async\" align=\"left\" src=\"https:\/\/ecolebooks.com\/nigeria\/wp-content\/uploads\/9jalessonsimages\/100523_0800_Week7SS2Th57.png\" alt=\"\"\/><img decoding=\"async\" align=\"left\" src=\"https:\/\/ecolebooks.com\/nigeria\/wp-content\/uploads\/9jalessonsimages\/100523_0800_Week7SS2Th58.png\" alt=\"\"\/><img decoding=\"async\" align=\"left\" src=\"https:\/\/ecolebooks.com\/nigeria\/wp-content\/uploads\/9jalessonsimages\/100523_0800_Week7SS2Th59.png\" alt=\"\"\/><br \/>\n\t<img decoding=\"async\" align=\"left\" src=\"https:\/\/ecolebooks.com\/nigeria\/wp-content\/uploads\/9jalessonsimages\/100523_0800_Week7SS2Th60.png\" alt=\"\"\/> C   =  C- C  &#8211; C  &#8211; C  &#8211;  C-<br \/>\n<img decoding=\"async\" align=\"left\" src=\"https:\/\/ecolebooks.com\/nigeria\/wp-content\/uploads\/9jalessonsimages\/100523_0800_Week7SS2Th61.png\" alt=\"\"\/><img decoding=\"async\" align=\"left\" src=\"https:\/\/ecolebooks.com\/nigeria\/wp-content\/uploads\/9jalessonsimages\/100523_0800_Week7SS2Th62.png\" alt=\"\"\/><img decoding=\"async\" align=\"left\" src=\"https:\/\/ecolebooks.com\/nigeria\/wp-content\/uploads\/9jalessonsimages\/100523_0800_Week7SS2Th63.png\" alt=\"\"\/><img decoding=\"async\" align=\"left\" src=\"https:\/\/ecolebooks.com\/nigeria\/wp-content\/uploads\/9jalessonsimages\/100523_0800_Week7SS2Th64.png\" alt=\"\"\/><img decoding=\"async\" align=\"left\" src=\"https:\/\/ecolebooks.com\/nigeria\/wp-content\/uploads\/9jalessonsimages\/100523_0800_Week7SS2Th65.png\" alt=\"\"\/><img decoding=\"async\" align=\"left\" src=\"https:\/\/ecolebooks.com\/nigeria\/wp-content\/uploads\/9jalessonsimages\/100523_0800_Week7SS2Th66.png\" alt=\"\"\/><br \/>\n\tn      H       HHHHH\u00a0\u00a0\u00a0\u00a0n<br \/>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0Polyethene<br \/>\ni.    Ethene can also undergo addition reaction with oxygen in the presence of silver catalyst at about250<sup>o<\/sup>C to form epoxy ethane.<br \/>\n                     H   H\u00a0\u00a0\u00a0\u00a0HH<br \/>\n<img decoding=\"async\" align=\"left\" src=\"https:\/\/ecolebooks.com\/nigeria\/wp-content\/uploads\/9jalessonsimages\/100523_0800_Week7SS2Th67.png\" alt=\"\"\/><img decoding=\"async\" align=\"left\" src=\"https:\/\/ecolebooks.com\/nigeria\/wp-content\/uploads\/9jalessonsimages\/100523_0800_Week7SS2Th68.png\" alt=\"\"\/><img decoding=\"async\" align=\"left\" src=\"https:\/\/ecolebooks.com\/nigeria\/wp-content\/uploads\/9jalessonsimages\/100523_0800_Week7SS2Th69.png\" alt=\"\"\/><img decoding=\"async\" align=\"left\" src=\"https:\/\/ecolebooks.com\/nigeria\/wp-content\/uploads\/9jalessonsimages\/100523_0800_Week7SS2Th70.png\" alt=\"\"\/><br \/>\n\t<img decoding=\"async\" align=\"left\" src=\"https:\/\/ecolebooks.com\/nigeria\/wp-content\/uploads\/9jalessonsimages\/100523_0800_Week7SS2Th71.png\" alt=\"\"\/><img decoding=\"async\" align=\"left\" src=\"https:\/\/ecolebooks.com\/nigeria\/wp-content\/uploads\/9jalessonsimages\/100523_0800_Week7SS2Th72.png\" alt=\"\"\/><img decoding=\"async\" align=\"left\" src=\"https:\/\/ecolebooks.com\/nigeria\/wp-content\/uploads\/9jalessonsimages\/100523_0800_Week7SS2Th73.png\" alt=\"\"\/>              H \u2013 C =   C &#8211;  H   + \u00bd O2            H \u2013 C  &#8211;  C  &#8211; H<\/p>\n<p>\u00a0O<br \/>\n<strong>USES OF ETHENE: <\/strong>Ethene is used<\/p>\n<ul>\n<li>\n<div>In the manufacture of plastics.\n<\/div>\n<ul>\n<li>In making synthetic rubber.\n<\/li>\n<li>To hasten the ripening of fruits.\n<\/li>\n<\/ul>\n<\/li>\n<li>In the production of other organic compounds e.g halo-alkane, ethane and ethanol.\n<\/li>\n<\/ul>\n<p>\u00a0<strong>GENERAL Evaluation\/REVISION<br \/>\n<\/strong><\/p>\n<ol>\n<li>\n<div>Write balanced equations to show the reaction of ethene with the following:\n<\/div>\n<ol>\n<li>Bromine water\n<\/li>\n<li>Chlorine water\n<\/li>\n<li>Acidified KMnO<sub>4<\/sub>\n\t\t\t\t<\/li>\n<\/ol>\n<\/li>\n<li>State four uses of ethene.\n<\/li>\n<li>Why is an empty flask inserted between the flat bottom flask and the conical flask holding the drying agent in the laboratory preparation of ethene?\n<\/li>\n<li>State THREE factors that determine the spontaneity of a chemical reaction.\n<\/li>\n<li>\n<div>0.92g of ethanol raised the temperature of 100g of water from 298K to 312.3K when\n<\/div>\n<p>burned completely. What is the heat of combustion of ethanol?\n<\/li>\n<\/ol>\n<p>\u00a0<strong>READING ASSIGNMENT<br \/>\n<\/strong>New School Chemistry for Senior Secondary School by O.Y. Ababio (6<sup>th<\/sup>edition) Pages 532-535<\/p>\n<p>\u00a0<strong>Weekend Assignment<br \/>\n<\/strong><strong>SECTION A: <\/strong>Write the correct option ONLY<br \/>\n1.  \u00a0\u00a0\u00a0\u00a0The name of the organic compound with the structure below is<br \/>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0CH<sub>3<\/sub>\u00a0\u00a0\u00a0\u00a0     H<br \/>\n<img decoding=\"async\" align=\"left\" src=\"https:\/\/ecolebooks.com\/nigeria\/wp-content\/uploads\/9jalessonsimages\/100523_0800_Week7SS2Th74.png\" alt=\"\"\/><img decoding=\"async\" align=\"left\" src=\"https:\/\/ecolebooks.com\/nigeria\/wp-content\/uploads\/9jalessonsimages\/100523_0800_Week7SS2Th75.png\" alt=\"\"\/><br \/>\n\tC  =  C<br \/>\n<img decoding=\"async\" align=\"left\" src=\"https:\/\/ecolebooks.com\/nigeria\/wp-content\/uploads\/9jalessonsimages\/100523_0800_Week7SS2Th76.png\" alt=\"\"\/><img decoding=\"async\" align=\"left\" src=\"https:\/\/ecolebooks.com\/nigeria\/wp-content\/uploads\/9jalessonsimages\/100523_0800_Week7SS2Th77.png\" alt=\"\"\/><br \/>\n\t\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0H               CH<sub>3<\/sub><br \/>\n\tA. Cis- but-2-eneB.Trans \u2013cis-but-2-eneC.Trans-1-2- but-2-eneD.1,2- dimethyl ethane.<br \/>\n2.  In the reaction given below:<br \/>\n<img decoding=\"async\" align=\"left\" src=\"https:\/\/ecolebooks.com\/nigeria\/wp-content\/uploads\/9jalessonsimages\/100523_0800_Week7SS2Th78.png\" alt=\"\"\/>\u00a0\u00a0\u00a0\u00a0C<sub>2<\/sub>H<sub>5<\/sub>OH    <sup>Conc H<\/sup><sub>2<\/sub><sup>SO<\/sup><sub>4 <\/sub>      C<sub>2<\/sub> H<sub>4<\/sub>Conc H<sub>2<\/sub>SO<sub>4<\/sub>is  acting as<br \/>\n -H<sub>2<\/sub>O<br \/>\nA.\u00a0\u00a0\u00a0\u00a0oxidizing agent B. reducing agent\u00a0\u00a0\u00a0\u00a0C. dehydrating agent    D. drying agent.<br \/>\n3.  One of the following is not a chemical property of ethene.<br \/>\nA. Polymerization B. Substitution reaction C. Hydration D.  Addition reaction<br \/>\n4.    Function of the empty bottle during the preparation of ethane gas is<br \/>\nA. to remove oxygen B. to remove CO<sub>2<\/sub>C. to prevent sucking back of the gas  D. None of the above<br \/>\n5.    Addition reaction of hydrogen and ethene is known as<br \/>\nA. polymerization B. halogenation C. combustion D. hydrogenation  <\/p>\n<p>\u00a0<strong>SECTION B<\/strong><br \/>\n\t1.     Write and name the geometric isomers of compound with the molecular formula C<sub>5<\/sub>H<sub>10<\/sub><br \/>\n\t2.     Write balanced chemical equation to show how ethene reacts with the following:<br \/>\na. concentrated H<sub>2<\/sub>SO<sub>4<\/sub>b. bromine water c. acidified KMnO<sub>4<\/sub><br \/>\n\t<strong><br \/>\n\t\t<\/strong>\u00a0<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u00a0WEEK SEVEN TOPIC: ALKENES CONTENT Nomenclature Preparation, Properties and Uses. \u00a0 UNSATURATED HYDROCARBONS These are&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1,268],"tags":[],"class_list":["post-3364","post","type-post","status-publish","format-standard","hentry","category-posts","category-third-term-ss2-chemistry"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/ecolebooks.com\/nigeria\/wp-json\/wp\/v2\/posts\/3364","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ecolebooks.com\/nigeria\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ecolebooks.com\/nigeria\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ecolebooks.com\/nigeria\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/ecolebooks.com\/nigeria\/wp-json\/wp\/v2\/comments?post=3364"}],"version-history":[{"count":1,"href":"https:\/\/ecolebooks.com\/nigeria\/wp-json\/wp\/v2\/posts\/3364\/revisions"}],"predecessor-version":[{"id":3365,"href":"https:\/\/ecolebooks.com\/nigeria\/wp-json\/wp\/v2\/posts\/3364\/revisions\/3365"}],"wp:attachment":[{"href":"https:\/\/ecolebooks.com\/nigeria\/wp-json\/wp\/v2\/media?parent=3364"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ecolebooks.com\/nigeria\/wp-json\/wp\/v2\/categories?post=3364"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ecolebooks.com\/nigeria\/wp-json\/wp\/v2\/tags?post=3364"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}