Question

Pure methane can be produced by:

• A. Wurtz reaction
• B. Kolbe's electrolysis method
• C. Soda lime decarboxylation
• D. Reduction with $H_2$

Answer 1

The correct option is C Soda lime decarboxylation

Pure methane can be prepared by heating acetic acid salt, such as sodium acetate $\left(C{H}_{3}COONa\right)$ with soda lime. The chemical formula for soda lime is $NaOH$. Decarboxylation means removal of carbon dioxide. Soda lime decarboxylation reaction can produce pure methane by the following chemical reaction:

$C{H}_{3}COONa+NaOH\to C{H}_4+N{a}_{2}C{O}_3$