Question

The compound insoluble in water is

• A. mercurous nitrate
• B. mercuric nitrate
• C. mercurous chloride
• D. mercurous perchlorate

Answer 1

Answer: (C)

Among the given compounds, mercurous chloride is insoluble in water. The following compounds are always soluble in water :
(i) salts of IA group elements and $N{H}_4^{+}$ions.
(ii) All nitrate, acetate and perchlorate $\left(Cl{O}_4^{-}\right)$ compounds.
(iii) All sulphate compounds (except those of $C{a}^{2+},S{r}^{2+},B{a}^{2+}$ and $P{b}^{2+})$.
(iv) All chloride compounds (except those of $A{g}^{+},P{b}^{2+},C{u}^{+}$and $H{g}_2^{2+})$.