Question

\(\mathrm{HCl}\) was passed through a solution of \(\mathrm{CaCl}_{2}, \mathrm{MgCl}_{2}\) and \(\mathrm{NaCl}\). Which of the following compound(s) crystallise(a)?
A Both \(M g C l_{2}\) and \(C a C l_{2}\)
(B) Only \(\mathrm{NaCl}\)
c Only \(M g C l_{2}\)
D \(\mathrm{NaCl}, \mathrm{MgCl}_{2}\) and \(\mathrm{CaCl}_{2}\)

Answer 1

Solution:
On passing \(\mathrm{HCl}\) through aqueous solution of \(\mathrm{CaCl}_{2}, \mathrm{MgCl}_{2}\) and \(\mathrm{NaCl}\), crystals of pure \(\mathrm{NaCl}\) seperate out. Calcium and magnesium chloride being more soluble than \(\mathrm{NaCl}\), remain in solution.

Answer 2

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Answer 3

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