pBlock ElementsII 1 Question 81
76. Write the balanced equations for the reactions of the following compounds with water:
(ii) $\mathrm{CaNCN}$ (iii) $\mathrm{BF}{3}$ (iv) $\mathrm{NCl}{3}$ (v) $\mathrm{XeF}_{4}$ (2002, 5M)
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Solution:
- (i) $\mathrm{Al}{4} \mathrm{C}{3}+12 \mathrm{H}{2} \mathrm{O} \longrightarrow 4 \mathrm{Al}(\mathrm{OH}){3}+3 \mathrm{CH}_{4}$
(ii) $\mathrm{CaNCN}+5 \mathrm{H}{2} \mathrm{O} \longrightarrow \mathrm{CaCO}{3}+2 \mathrm{NH}_{4} \mathrm{OH}$
(iii) $4 \mathrm{BF}{3}+3 \mathrm{H}{2} \mathrm{O} \longrightarrow \mathrm{H}{3} \mathrm{BO}{3}+3 \mathrm{HBF}_{4}$
(iv) $\mathrm{NCl}{3}+3 \mathrm{H}{2} \mathrm{O} \longrightarrow \mathrm{NH}_{3}+3 \mathrm{HOCl}$
(v) $2 \mathrm{XeF}{4}+3 \mathrm{H}{2} \mathrm{O} \longrightarrow \mathrm{Xe}+\mathrm{XeO}{3}+\mathrm{F}{2}+6 \mathrm{HF}$
