Q13 / 180 · COMEDK 2016 · Chemistry

The main product obtained when a solution of sodium carbonate reacts with mercuric chloride is

A
$\mathrm{HgCO}_{3}$
B
$\mathrm{HgCO}_{3}, \mathrm{Hg}(\mathrm{OH})_{2}$
C
$\mathrm{Hg}(\mathrm{OH})_{2}$
Correct answer
D
$\mathrm{HgCO}_{3}, \mathrm{HgO}$

Solution

The main product obtained when sodium carbonate reacts with mercuric chloride is mercuric oxide. $\mathrm{HgCl}_{2}+\mathrm{Na}_{2} \mathrm{CO}_{3} \longrightarrow \mathrm{HgO}+\mathrm{CO}_{2}+2 \mathrm{NaCl} or \mathrm{HgCO}_{3}+2 \mathrm{NaCl}$

Hence, the correct answer is option: 'D'.

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