Question

A compound ‘X’ in its aqueous solution form, is added to acetic acid taken in a test tube. Then a gas is evolved. This gas turns lime water milky. Name the compound ‘X’ and the gas evolved. Also write the equation for the reaction.(All India - 2011)

Answer 1

Explanation:

gas is CO2

Compound X is Na2CO3

Answer 2

The compound 'X' in its aqueous solution is sodium carbonate, whose chemical formula is Na2CO3.

• The compound produced with its reaction with acetic acid is carbon dioxide, the very notorious CO2, which is known for its property of turning lime water milky.
• The chemical reaction that takes place is: CH3COOH + NaHCO3(Na2CO3 in its aqueous form) ->CH3COONa + H2O + CO2