Question

Sodium carbonate is prepared by Solvay process but the
same process is not extended to the manufacture of
potassium carbonate, explain.

Answer 1

In Solvay process, $NaHC{O}_3$ is extracted from the solution by fractional crystallisation, which is then heated to convert it into $N{a}_{2}C{O}_3\cdot KHC{O}_3$, being more soluble than $NaHC{O}_3$, cannot be extracted by fractional crystallisation. Hence, Solvay process fails in production of $K_{2}C{O}_3$.