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0 votes
2.2k views
in Chemistry by (23.5k points)

The equilibrium constant of the following isomerisation reaction at 400K and 298 K are 2.07 and 3.42 respectively.

cis-butene trans-butene

Which of the following is/are correct ? 

I. The reaction is exothermic 

II. The reaction is endothermic 

III. At 400K 50% of cis-butene and 50% of trans-butene are present of equilibrium 

IV. Both at 298K and 400K, k1 =k–1 

(A) I and IV 

(B) II and IV 

(C) I and III 

(D) I only

1 Answer

+1 vote
by (24.2k points)
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Best answer

Correct answer is (D) I only

As on T increase, Keq is increasing, Reaction is exothermic.

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