Question

$HgC{l}_2$ is soluble in:

• A. cold water
• B. $NaCl$ solution due to formation of $HgC{l}_4^{2-}$
• C. both $\left(A\right)$ and $\left(D\right)$
• D. none of the above

Answer 1

The correct option is B $NaCl$ solution due to formation of $HgC{l}_4^{2-}$

$HgC{l}_2$ reacts with sodium chloride solution to form soluble $HgC{l}_4^{2-}$.
$HgC{l}_2+2NaCl\to N{a}_{2}HgC{l}_4$