Equilibrium Question 731

Question: For the following three reactions, 1, 2 and 3, equilibrium constants are given

(1) $ C{O_{(g)}}+H_2{O_{(g)}} \leftrightharpoons C{O_{2(g)}}+{H_{2(g)}};K_1 $

(2) $ C{H_{4(g)}} $

$ +H_2{O_{(g)}} \leftrightharpoons $

$ C{O_{(g)}} $

$ 3{H_{2(g)}};K_2 $

(3) $ C{H_{4(g)}}+2H_2{O_{(g)}} \leftrightharpoons C{O_{2(g)}}+4{H_{2(g)}};K_3 $

Which of the following relationship is correc'

Options:

A) $ K_1\sqrt{K_2}=K_3 $

B) $ K_2K_3=K_1 $

C) $ K_3=K_1K_2 $

D) $ K_3.,K^3_2=K^2_1 $

Show Answer

Answer:

Correct Answer: C

Solution:

$ CO(g)+H_2O(g)\rightarrow CO_2(g)+H_2(g);K_1 $ (1) $ CH_4(g)+H_2O(g)\rightarrow CO(g)+3H_2(g);K_2 $ (2) $ CH_4+2H_2O(g)\rightarrow CO_2(g)+4H_2(g);K_3 $ (3) Eq. (3) = eq. (1)+eq.(2) Thus, $ K_3=K_1.K_2 $



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