Question

what is the pH of solution "A" which liberates CO2 gas with a carbonate salt?give reason

Answer 1

it has to be greater than 7 cause it reacts with acid to liberate co3

Answer 2

Answer: The pH of the solution must be less than 7 and it must be an acidic solution.

Explanation:

A carbonate salt is a salt which contains a carbonate polyatomic molecule as an anion. On its reaction with a acid, it leads to the liberation of carbon dioxide gas.

The equation for the reaction of carbonate salt with solution A is:

$MCO_3+2HX\rightarrow MX_2+CO_2+H_2O$

The solution must be acidic and for acidic solutions, the pH must be less than 7 and greater than 0.

Therefore, the pH of the solution must be less than 7 and it must be an acidic solution.