Q.

Which of the following will not change the concentration of ammonia in the equilibrium?4NH3(g)+5O2(g)⇌4NO(g)+6H2O(l)  , ΔH=+ve

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a

Increase of pressure

b

Increase of volume

c

Addition of catalyst

d

Decrease of temperature

answer is C.

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Detailed Solution

A catalyst simply helps to attain the equilibrium quickly and it does not affect the concentration of ammonia.
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Which of the following will not change the concentration of ammonia in the equilibrium?4NH3(g)+5O2(g)⇌4NO(g)+6H2O(l)  , ΔH=+ve