Chemistry - Complete s-block Question with Solution | TestHub

CaO can be used as drying agent for ammonia as except CaO, all react with$\mathrm{N}{\mathrm{H}}_3$. Anhyd.$\mathrm{C}\mathrm{a}\mathrm{C}{\mathrm{l}}_2$forms$\left[\mathrm{C}\mathrm{a}{\left(\mathrm{N}{\mathrm{H}}_3\right)}_8\right]\mathrm{C}{\mathrm{l}}_2$with$\mathrm{N}{\mathrm{H}}_3\mathrm{ }.\mathrm{ }{\mathrm{P}}_2{\mathrm{O}}_5$is acidic in nature and${\mathrm{H}}_2\mathrm{S}{\mathrm{O}}_4$is a strong acid and therefore, these react with$\mathrm{N}{\mathrm{H}}_3$.