Question

HCl was passed through a solution of CaCl2, MgCl,
and NaCl. Which of the compound(s)
crystallise(s)?
​

Answer 1

Answer:

When HCl is passed thorugh the mixture Cl¯ ion concentration increases. Hence ionic product [Na+] [Cl¯] becomes more than solubility product. So NaCl will precipitate out.