{"id":3684,"date":"2023-10-05T18:16:38","date_gmt":"2023-10-05T18:16:38","guid":{"rendered":"http:\/\/localhost\/ecole9ja\/?p=3684"},"modified":"2023-10-05T18:22:47","modified_gmt":"2023-10-05T18:22:47","slug":"week-2-ss3-first-term-chemistry-notes","status":"publish","type":"post","link":"https:\/\/ecolebooks.com\/nigeria\/posts\/week-2-ss3-first-term-chemistry-notes\/","title":{"rendered":"Week 2 &#8211; SS3 First Term Chemistry Notes"},"content":{"rendered":"<p><strong>WEEK TWO<br \/>\n<\/strong><strong>Topic: Unsaturated Hydrocarbons \u2013 Alkenes<br \/>\n<\/strong><br \/>\n\u00a0<strong>CONTENT<\/strong><\/p>\n<ul>\n<li>Nomenclature\n<\/li>\n<li>Preparation\n<\/li>\n<li>Properties\n<\/li>\n<li>Uses.\n<\/li>\n<\/ul>\n<p>\u00a0<strong>UNSATURATED HYDROCARBONS<br \/>\n<\/strong>These are hydrocarbons in which carbon atoms join with each other by multiple bonds.  The multiple bond can be double bonds e.g Alkene or triple bonds e.g Alkyne.<br \/>\n1. Ethene2 .Ethyne<br \/>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0H \u2013 C = C \u2013 H\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0H \u2013 C = C \u2013 H<br \/>\nH   H.\u00a0\u00a0\u00a0\u00a0<br \/>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0Alkenes e.gEthene<br \/>\nNomenclature<br \/>\nThe process of naming in alkene is obtained by substitute &#8220;ane&#8221; in alkane with &#8216;ene&#8217; e.g Ethane changes to Ethene, propane to prepene<\/p>\n<p>\u00a0PREPARATION (Lab. Preparation)<br \/>\n1. \u00a0Ethene is prepared by heating ethanol with excess concentrated tetraososulphate VI \u00a0\u00a0\u00a0\u00a0\u00a0acid 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.<br \/>\nThe reaction occurs in two stages<br \/>\n<img decoding=\"async\" align=\"left\" src=\"https:\/\/ecolebooks.com\/nigeria\/wp-content\/uploads\/9jalessonsimages\/100523_1816_Week2SS3Fi1.png\" alt=\"\"\/>\u00a0\u00a0\u00a0\u00a0C<sub>2<\/sub>H<sub>5<\/sub>OH(aq)  + H<sub>2<\/sub>SO<sub>4<\/sub> (aq) \u00a0\u00a0\u00a0\u00a0        C<sub>2<\/sub>H<sub>5<\/sub>HSO<sub>4<\/sub> + H<sub>2<\/sub>O<br \/>\n<img decoding=\"async\" align=\"left\" src=\"https:\/\/ecolebooks.com\/nigeria\/wp-content\/uploads\/9jalessonsimages\/100523_1816_Week2SS3Fi2.png\" alt=\"\"\/>C<sub>2<\/sub>H<sub>5<\/sub>HSO<sub>4<\/sub>               C<sub>2<\/sub>H<sub>4<\/sub>+ H<sub>2<\/sub>SO<sub>4<\/sub>.<br \/>\nThe overall reaction is represented by the equation .<br \/>\n<img decoding=\"async\" align=\"left\" src=\"https:\/\/ecolebooks.com\/nigeria\/wp-content\/uploads\/9jalessonsimages\/100523_1816_Week2SS3Fi3.png\" alt=\"\"\/>C<sub>2<\/sub>H<sub>5<\/sub>OH  <sup>H<\/sup>2<sup>SO<\/sup>4 C<sub>2<\/sub>H<sub>4<\/sub>+ H<sub>2<\/sub>SO<sub>4<\/sub><br \/>\n\t\t-H<sub>2<\/sub>O<br \/>\n<img decoding=\"async\" align=\"left\" src=\"https:\/\/ecolebooks.com\/nigeria\/wp-content\/uploads\/9jalessonsimages\/100523_1816_Week2SS3Fi4.png\" alt=\"\"\/>2.  Ethene can be prepared through cracking of Alkane   e.g C<sub>3<\/sub>H<sub>8<\/sub>\u00a0\u00a0\u00a0\u00a0    C<sub>2<\/sub>H<sub>4<\/sub> + CH<sub>4.<br \/>\n<\/sub>3.  By dehydration<br \/>\n\u00a0\u00a0\u00a0\u00a0e.g\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0H\u00a0\u00a0\u00a0\u00a0H\u00a0\u00a0\u00a0\u00a0Cl            H       H<\/p>\n<p>\u00a0<img decoding=\"async\" align=\"left\" src=\"https:\/\/ecolebooks.com\/nigeria\/wp-content\/uploads\/9jalessonsimages\/100523_1816_Week2SS3Fi5.png\" alt=\"\"\/>                                        H &#8211;  C &#8211;   C \u2013 H                            C   =   C  + HCL<\/p>\n<p>\u00a0                                               H      Cl                                H       H<\/p>\n<p>\u00a0<strong>Physical Properties<br \/>\n<\/strong>1.\u00a0\u00a0\u00a0\u00a0Ethene is a colourless gas with faint sweetish odour .<br \/>\n2.      \u00a0\u00a0\u00a0\u00a0It is sparingly  soluble in water<br \/>\n3.\u00a0\u00a0\u00a0\u00a0It is slightly less dense than air<br \/>\n4.\u00a0\u00a0\u00a0\u00a0It has no action on litmus paper<\/p>\n<p>\u00a0<strong>Evaluation<br \/>\n<\/strong>1.\u00a0\u00a0\u00a0\u00a0Write four (4) physical properties of Ethene<br \/>\n2.\u00a0\u00a0\u00a0\u00a0How would you prepare a jar of ethane gas in the laboratory?<\/p>\n<p>\u00a0<strong>CHEMCIAL PROPERTIES<\/strong><br \/>\n\t\t1.\u00a0\u00a0\u00a0\u00a0<strong>Combustion<\/strong><br \/>\n\t\tEthene undergoes combustion\/oxidation 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_1816_Week2SS3Fi6.png\" alt=\"\"\/>\u00a0\u00a0\u00a0\u00a0C<sub>2<\/sub>H<sub>4 <\/sub> +  3O<sub>2<\/sub>               2CO<sub>2<\/sub> + 2H<sub>2<\/sub>O.<br \/>\n2.\u00a0\u00a0\u00a0\u00a0<strong>Additional reaction<\/strong><br \/>\n\t\ta.\u00a0\u00a0\u00a0\u00a0With hydrogen known as hydrogenation<br \/>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0H\u00a0\u00a0\u00a0\u00a0H\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0H\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0H<\/p>\n<p>\u00a0<img decoding=\"async\" align=\"left\" src=\"https:\/\/ecolebooks.com\/nigeria\/wp-content\/uploads\/9jalessonsimages\/100523_1816_Week2SS3Fi7.png\" alt=\"\"\/>                H-     C= C \u2013   H   +      H<sub>2<\/sub>            H &#8211;   C  &#8211;      C \u2013 H<\/p>\n<p>\u00a0Ethene                                        H         H          Ethane<br \/>\nb.\u00a0\u00a0\u00a0\u00a0With halogen know as halogenation<br \/>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0H\u00a0\u00a0\u00a0\u00a0H\u00a0\u00a0\u00a0\u00a0HH<\/p>\n<p>\u00a0<img decoding=\"async\" align=\"left\" src=\"https:\/\/ecolebooks.com\/nigeria\/wp-content\/uploads\/9jalessonsimages\/100523_1816_Week2SS3Fi8.png\" alt=\"\"\/>H  &#8211;  C =  C- H  +  Cl<sub>2                   <\/sub>H   C &#8211;  C &#8211;  H<\/p>\n<p>\u00a0Ethene\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0ClCl      1,2- dichloroethane<br \/>\nc.\u00a0\u00a0\u00a0\u00a0With Halides known as hydrogenation<br \/>\n<img decoding=\"async\" align=\"left\" src=\"https:\/\/ecolebooks.com\/nigeria\/wp-content\/uploads\/9jalessonsimages\/100523_1816_Week2SS3Fi9.png\" alt=\"\"\/>\u00a0\u00a0\u00a0\u00a0e.g  H- C = C \u2013 H + HBr\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0           H\u00a0\u00a0\u00a0\u00a0H<br \/>\n\u00a0\u00a0\u00a0\u00a0<br \/>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0H    HH    C         C \u2013 H<\/p>\n<p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0ethene\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0                 H        Br           1-Bromoethane.<br \/>\nd.\u00a0\u00a0\u00a0\u00a0With acidified \/Alkaline KMnO4 known as hydroxylation.  It decolourses acidified KMnO<sub>4<\/sub>, but turns alkaline KMnO<sub>4<\/sub> to green and result to ethane -1,2- diol.<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                 OH\u00a0\u00a0\u00a0\u00a0\u00a0OH<\/p>\n<p>\u00a0<img decoding=\"async\" align=\"left\" src=\"https:\/\/ecolebooks.com\/nigeria\/wp-content\/uploads\/9jalessonsimages\/100523_1816_Week2SS3Fi10.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<\/p>\n<p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0    H     H                                                  \u00a0\u00a0\u00a0\u00a0     HH<br \/>\n                                                                                             Ethane-1,2-diol (glycol)<br \/>\ne.\u00a0\u00a0\u00a0\u00a0With Hydrogen peroxide in the presence of osmium trioxde to form ethan -1,2- diol.<br \/>\nOH  OH<\/p>\n<p>\u00a0<img decoding=\"async\" align=\"left\" src=\"https:\/\/ecolebooks.com\/nigeria\/wp-content\/uploads\/9jalessonsimages\/100523_1816_Week2SS3Fi11.png\" alt=\"\"\/>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0H &#8211;    C  =  C  + H + H<sub>2<\/sub>O<sub>2<\/sub>          H \u2013 C &#8211;  C  &#8211; H<\/p>\n<p>\u00a0                                         H      HHH<br \/>\n                                 Ethane -1,2- diol.<br \/>\n<img decoding=\"async\" align=\"left\" src=\"https:\/\/ecolebooks.com\/nigeria\/wp-content\/uploads\/9jalessonsimages\/100523_1816_Week2SS3Fi12.png\" alt=\"\"\/>f.\u00a0\u00a0\u00a0\u00a0With conc. H<sub>2<\/sub>SO<sub>4<\/sub> known as hydration to produce fuming liquid of ethyl hydrogen sulphate.C<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><\/p>\n<p>\u00a0<img decoding=\"async\" align=\"left\" src=\"https:\/\/ecolebooks.com\/nigeria\/wp-content\/uploads\/9jalessonsimages\/100523_1816_Week2SS3Fi13.png\" alt=\"\"\/>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0When ethyl hydrogen sulphate is hydrolyzed, tetraoxosulphate (vi) acid and ethanol \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0are produced.C<sub>2<\/sub>H<sub>5<\/sub>SO<sub>4<\/sub>\u00a0\u00a0\u00a0\u00a0        C<sub>2<\/sub>H<sub>5<\/sub>OH + H<sub>2<\/sub>SO<sub>4<\/sub><br \/>\n\t\tg.\u00a0\u00a0\u00a0\u00a0Ethene 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<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<br \/>\n<img decoding=\"async\" align=\"left\" src=\"https:\/\/ecolebooks.com\/nigeria\/wp-content\/uploads\/9jalessonsimages\/100523_1816_Week2SS3Fi14.png\" alt=\"\"\/>          H \u2013 C = C \u2013 H\u00a0\u00a0\u00a0\u00a0+   HBrO\u00a0\u00a0\u00a0\u00a0             H \u2013 C \u2013    C &#8211;  H<\/p>\n<p>\u00a0               H   H          (radiation brown)                  Br     OH<br \/>\nBromoethanol.<br \/>\n\u00a0\u00a0\u00a0\u00a0Similarly:<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    H     H<br \/>\n\u00a0\u00a0\u00a0\u00a0<br \/>\n\u00a0<img decoding=\"async\" align=\"left\" src=\"https:\/\/ecolebooks.com\/nigeria\/wp-content\/uploads\/9jalessonsimages\/100523_1816_Week2SS3Fi15.png\" alt=\"\"\/>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0H-C  = C \u2013 H    +    HClO\u00a0\u00a0\u00a0\u00a0               H \u2013 C \u2013   C \u2013 H<br \/>\n                                                (Brown)<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\u00a0Cl   OH<br \/>\nChloroethanol<br \/>\nh.\u00a0\u00a0\u00a0\u00a0Polymerization of ethane to produce polythene.<br \/>\n                H      HHHHH<br \/>\n\u00a0\u00a0\u00a0\u00a0\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_1816_Week2SS3Fi16.png\" alt=\"\"\/>               C   =  CC  &#8211;  C  &#8211; C  &#8211;   C<\/p>\n<p>\u00a0               H       HHHHH<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.\u00a0\u00a0\u00a0\u00a0With ozone known as ozomolysis to from etheneozomides.<br \/>\n\u00a0\u00a0\u00a0\u00a0e.g\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0H\u00a0\u00a0\u00a0\u00a0H                                                      O<\/p>\n<p>\u00a0<img decoding=\"async\" align=\"left\" src=\"https:\/\/ecolebooks.com\/nigeria\/wp-content\/uploads\/9jalessonsimages\/100523_1816_Week2SS3Fi17.png\" alt=\"\"\/>\u00a0\u00a0\u00a0\u00a0C  =      C     + O<sub>3<\/sub>                                 H<sub>2<\/sub>C         CH<sub>2<\/sub><br \/>\n\t\t                                                              Ozone<br \/>\n                                H         H                                                      O<br \/>\nEtheneEtheneozonide<br \/>\nj.\u00a0\u00a0\u00a0\u00a0Ethene can also undergo additional 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_1816_Week2SS3Fi18.png\" alt=\"\"\/><img decoding=\"async\" align=\"left\" src=\"https:\/\/ecolebooks.com\/nigeria\/wp-content\/uploads\/9jalessonsimages\/100523_1816_Week2SS3Fi19.png\" alt=\"\"\/><img decoding=\"async\" align=\"left\" src=\"https:\/\/ecolebooks.com\/nigeria\/wp-content\/uploads\/9jalessonsimages\/100523_1816_Week2SS3Fi20.png\" alt=\"\"\/>              H \u2013 C =   C &#8211;  H   + \u00bd O2            H \u2013 C  &#8211;  C  &#8211; H<br \/>\n                                                                       O<br \/>\n<strong>USES<\/strong><\/p>\n<ul>\n<li>Used in the manufacture of plastics.\n<\/li>\n<li>Used in making synthetic rubber.\n<\/li>\n<li>Used to hasten the ripening of fruits.\n<\/li>\n<li>Used in the production of other organic compounds e.g halo-alkane,ethane, ethanol.\n<\/li>\n<\/ul>\n<p>\u00a0<strong>Evaluation<br \/>\n<\/strong>1.  Describe the reaction of ethane with the following:<\/p>\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<\/li>\n<\/ol>\n<p>2.   State four (4) uses of Ethene.<\/p>\n<p>\u00a0<strong>READING ASSIGNMENT<br \/>\n<\/strong>New School Chemistry by O.Y. AbabioPg 459-492<\/p>\n<p>\u00a0<strong>WEEKEND ASSIGNMENT<br \/>\n<\/strong>1.  The name of the organic compound with the structure below:<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_1816_Week2SS3Fi21.png\" alt=\"\"\/><img decoding=\"async\" align=\"left\" src=\"https:\/\/ecolebooks.com\/nigeria\/wp-content\/uploads\/9jalessonsimages\/100523_1816_Week2SS3Fi22.png\" alt=\"\"\/><br \/>\n\t\tC  =  C<br \/>\n<img decoding=\"async\" align=\"left\" src=\"https:\/\/ecolebooks.com\/nigeria\/wp-content\/uploads\/9jalessonsimages\/100523_1816_Week2SS3Fi23.png\" alt=\"\"\/><img decoding=\"async\" align=\"left\" src=\"https:\/\/ecolebooks.com\/nigeria\/wp-content\/uploads\/9jalessonsimages\/100523_1816_Week2SS3Fi24.png\" alt=\"\"\/><br \/>\n\t\t\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0H               CH<sub>3<\/sub><\/p>\n<ol>\n<li>Cis- but-2-ene\n<\/li>\n<li>Trans \u2013cis-but-2-ene\n<\/li>\n<li>Trans-1-2- but-2-ene\n<\/li>\n<li>1,2- dimethyl ethane.\n<\/li>\n<\/ol>\n<p>2.  In the reaction given below:<br \/>\n\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<img decoding=\"async\" align=\"left\" src=\"https:\/\/ecolebooks.com\/nigeria\/wp-content\/uploads\/9jalessonsimages\/100523_1816_Week2SS3Fi25.png\" alt=\"\"\/>                                  -H<sub>2<\/sub>O<br \/>\nA.  oxidizing agent\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0B reducing agent\u00a0\u00a0\u00a0\u00a0C. Dehydrating agent    D. Drying agent.<br \/>\n3.  One of the following is not a chemical property of ethane.<br \/>\n     (a ) Polymerization\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0(b) Substitutional    (c ) Hydration     (d)  Addition.<br \/>\n4.  Function of the empty bottle during the preparation of ethane gas is<br \/>\n        (a) to remove oxygen    (b) to remove CO<sub>2<\/sub>     ( c) to prevent sucking back of the gas    \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0(d) None of the above.<br \/>\n5.  Additional reaction of hydrogen and ethene is known as<br \/>\n        (a) polymerization\u00a0\u00a0\u00a0\u00a0   (b) additional    (c) combustion   (d) hydrogenation  <\/p>\n<p>\u00a0<strong>Theory<\/strong><br \/>\n\t\t1. Describe two (2) methods of obtaining ethene industrially.<br \/>\n2a. Write and name the geometric isomers of compound with the molecular formular  C<sub>5<\/sub>H<sub>10<\/sub><br \/>\n\t\t  b. With chemical equation only, show how ethane reacts with the following:<br \/>\n\u00a0\u00a0\u00a0\u00a0&#8211; ozone<br \/>\n\u00a0\u00a0\u00a0\u00a0&#8211; oxygen<br \/>\n\u00a0\u00a0\u00a0\u00a0&#8211; alkaline KMnO<sub>4<\/sub><br \/>\n\t\t\u00a0\u00a0\u00a0\u00a0&#8211;  Conc. H<sub>2<\/sub>SO<sub>4<br \/>\n<\/sub><\/p>\n","protected":false},"excerpt":{"rendered":"<p>WEEK TWO Topic: Unsaturated Hydrocarbons \u2013 Alkenes \u00a0CONTENT Nomenclature Preparation Properties Uses. \u00a0UNSATURATED HYDROCARBONS These&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1,288],"tags":[],"class_list":["post-3684","post","type-post","status-publish","format-standard","hentry","category-posts","category-first-term-ss3-chemistry"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/ecolebooks.com\/nigeria\/wp-json\/wp\/v2\/posts\/3684","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=3684"}],"version-history":[{"count":1,"href":"https:\/\/ecolebooks.com\/nigeria\/wp-json\/wp\/v2\/posts\/3684\/revisions"}],"predecessor-version":[{"id":3685,"href":"https:\/\/ecolebooks.com\/nigeria\/wp-json\/wp\/v2\/posts\/3684\/revisions\/3685"}],"wp:attachment":[{"href":"https:\/\/ecolebooks.com\/nigeria\/wp-json\/wp\/v2\/media?parent=3684"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ecolebooks.com\/nigeria\/wp-json\/wp\/v2\/categories?post=3684"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ecolebooks.com\/nigeria\/wp-json\/wp\/v2\/tags?post=3684"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}