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Question

The equilibrium constant for the reaction,
N2(g)+O2(g)2NO(g) is 4.0×104 at 2000K. In the presence of a catalyst the equilibrium is attained ten times faster. Therefore, the equilibrium constant in presence of the catalyst at 2000K is:

A
4×104
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B
40×104
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C
4×102
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D
Difficult to compute without more data
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Solution

The correct option is A 4×104

Explanation:

Equilibrium constants are not changed if you add a catalyst. The only thing that changes an equilibrium constant is a change of temperature. The position of equilibrium is not changed if you add a catalyst. A catalyst speeds up both the forward and back reactions by the same amount.

the equilibrium is the same as without catalyst and with catalyst.

Hence the correct answer is option A


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