Chemistry - Complete P-block Question with Solution | TestHub

Question Explanation: Reactions of group 15 species.

Concept: This question is based on mainly heating reactions of nitrate and phosphate.

Solution:

(A) ${\mathrm{H}}_3{\mathrm{PO}}_3\stackrel{\Delta }{\to }{\mathrm{H}}_3{\mathrm{PO}}_4+{\mathrm{PH}}_3$

(B) $\mathrm{Pb}{\left({\mathrm{NO}}_3\right)}_2\stackrel{\Delta }{\to }2\mathrm{PbO}+{\mathrm{NO}}_2+{\mathrm{O}}_2$

(C) ${\mathrm{NH}}_4{\mathrm{NO}}_3\stackrel{\Delta }{\to }{\mathrm{N}}_2\mathrm{O}+2{\mathrm{H}}_2\mathrm{O}$

(D)${\mathrm{P}}_4+\mathrm{NaOH}+{\mathrm{H}}_2\mathrm{O}\stackrel{\Delta }{\to }{\mathrm{NaH}}_2{\mathrm{PO}}_2+{\mathrm{PH}}_3$

(Disproportionation)