When heated, ammonium carbamate decomposes as follows: $\mathrm{NH}_{4} \mathrm{COONH}_{2}(\mathrm{~s})…

When heated, ammonium carbamate decomposes as follows: $\mathrm{NH}_{4} \mathrm{COONH}_{2}(\mathrm{~s}) ightleftharpoons 2 \mathrm{NH}_{3}(\mathrm{~g})+\mathrm{CO}_{2}(\mathrm{~g}) \cdot \mathrm{At}$ a certain temperature, the equilibrium pressure of the system is $0.318 \mathrm{~atm} . \mathrm{K}_{\mathrm{p}}$ for the reaction is:
  1. $0.128$
  2. $0.426$
  3. $4.76 \times 10^{-3}$
  4. None of these

Solution

$\begin{aligned} P_{\text {total }} &=3 P \\ \Rightarrow \quad & P=\frac{0.318}{3}=0.106 \\ \therefore \quad & K_{p}=4 P^{3}=4.76 \times 10^{-3} \end{aligned}$ ,

Asked in: JEE-TOPICTESTS-CHEMISTRY

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