Which of the followings is incorrect?

Discussion Forum : Chemical Equilibrium

Question -

Options:

A . According to law of mass action, rate of a chemical reaction is proportional to molar concentration of reactants.

B . If

K_{c} › 1

then products are present predominantly at equilibrium.

C . Catalysts increase the rate of forward reaction as well as backward reaction.

D . Value of equilibrium constant increases with increase in temperature.

Answer: Option D
:
D

a) According to law of mass action,rate of a chemical reaction is proportional to molar concentration of reactants.

b) At equilibrium,

Products are present predominantly if $K_{c} > 1$

Products are present predominantly if $K_{c} < 1$

b) Though value of equilibrium constant doest not charge, catalysts increase the rate of both the forward and backward reactions.
c) $l n \frac{k_{2}}{k_{1}} = \frac{△ H}{R} (\frac{1}{T_{1}} - \frac{1}{T_{2}})$
$I f T_{2} > T_{1},$

$K_{2} < K_{1} i f △ H > 0$ i.e. reaction is endothermic

$K_{2} < K_{1} i f △ H > 0$ i.e. reaction is exothermic

Hence this Option is incorrect

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