Chemistry - Ionic Equilibrium Question with Solution | TestHub

Bismuth compounds exhibit varying solubility. While bismuth nitrate, $\mathrm{Bi}({\mathrm{NO}}_3{)}_3$, and bismuth sulfate, ${\mathrm{Bi}}_2({\mathrm{SO}}_4{)}_3$, are generally soluble in water (or acidic solutions), bismuth oxychloride, $\mathrm{BiOCl}$, and bismuth oxynitrate, $\mathrm{BiO}({\mathrm{NO}}_3)$, are known to be insoluble or sparingly soluble in water, often precipitating as white solids. ${\mathrm{BiCl}}_3$ hydrolyzes in water to form insoluble $\mathrm{BiOCl}$. Therefore, $\mathrm{BiO}({\mathrm{NO}}_3)$ is not soluble in water.

The final answer is $\boxed{D}$