Equilibrium Question 254

Question: For the reaction $ 2NO_2{(g)} $ ⇌ $ 2N{O_{(g)}}+O_2{(g)} $

$ K_{c}=1.8\times {10^{-6}} $ at 185°C. At 185°C, the value of $ K_{c} $ for the reaction $ N{O_{( g )}}+\frac{1}{2}O_2{( g )} $ ⇌ $ NO_2{( g )} $ is [UPSEAT 2000]

Options:

A) $ 0.9\times 10^{6} $

B) $ 7.5\times 10^{2} $

C) $ 1.95\times {10^{-3}} $

D) $ 1.95\times 10^{3} $

Show Answer

Answer:

Correct Answer: B

Solution:

Reaction is reversed and halved. $ K=\sqrt{{1}/{1.8};\times {10^{-6}}}=7.5\times 10^{2} $



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