Q7 of 19 Page 149

Complete the following Chemical reactions.

1. ........+....... CO2 + 2H2O + Heat


2. ...........+......... CH3Cl + HCl


3. 2 NaOH + CO2........+........

1. CH4 + 2O2 CO2 + 2H2O + heat


Explanation:


When methane (CH4) is burnt in the presence of oxygen to form evolve a bluish flame. In the above reaction, the methane burns completely.


2. CH4 + Cl2 CH3Cl + HCl


Explanation:


Methane(CH4) and chlorine(Cl2) gases react with each other in presence of UV light and form mainly methyl chloride (chloromethane – CH3Cl) and hydrogen chloride. This reaction is called chlorination of methane.


3. 2NaOH + CO2 Na2CO3 + H2O


Explanation: When aqueous solution of sodium hydroxide is passed through carbon dioxide, it forms sodium carbonate (Na2CO3)


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