Chemical EquilibriumHard

Question

Ammonia at a pressure of 10 atm and CO2 at a pressure of 20 atm are introduced into an evacuated chamber. If KP for the reaction NH2COONH4(s) $\rightleftharpoons$2NH3(g) + CO2 (g) is 2020 atm3, then the total pressure after a long time is

Options

A.less than 30 atm
B.more than 30 atm
C.equal to 30 atm
D.un-predictable

Solution

$Q_{P} = P_{NH_{3}}^{2} \times P_{CO_{2}} = 10^{2} \times 20 = 2000\text{ at}\text{m}^{3} < K_{P}$

Hence, the reaction should shift forward. But as solid NH2COONH4 is not present initially, the pressure will remain at 30 atm.

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