Equilibrium Question 759

Question: When heated, ammonium carbamate decomposes as follows: $ NH_4COONH_2(s)\rightarrow 2NH_3(g)+CO_2(g) $ . At a certain temperature, the equilibrium pressure of the system is 0.318 atm. $ K_{p} $ for the reaction is:

Options:

A) 0.128

B) 0.426

C) $ 4.76\times {10^{-3}} $

D) None of these

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Answer:

Correct Answer: C

Solution:

$ P_{total}=3P $

$ \Rightarrow P=\frac{0.318}{3}=0.106 $

$ \therefore K_{p}=4P^{3}=4.76\times {10^{-3}} $



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