Question

Sodium carbonate can be used to precipitate calcium carbonate by reacting it with:

• A. calcium sulphate
• B. calcium chloride
• C. magnesium oxide
• D. both $B$ and $C$

Answer 1

The correct option is B calcium chloride

The process of making a solid come from a solution is called precipitation. The solid itself is called a precipitate. Sodium carbonate can be used to precipitate calcium carbonate.
$CaC{l}_2\left(aq\right)+N{a}_{2}C{O}_3\left(aq\right)\to CaC{O}_3\left(s\right)+2NaCl\left(aq\right)$