(D) According to the $Le \ Chatelier$ principle,a catalyst provides an alternative pathway with lower activation energy for both the forward and backw

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(D) According to the $Le \ Chatelier$ principle,a catalyst provides an alternative pathway with lower activation energy for both the forward and backward reactions. It increases the rate of both reactions equally,thus reaching the equilibrium state faster without changing the position of the equilibrium or the equilibrium constant. Therefore,the presence of a catalyst does not affect the equilibrium.

Class 11 Chemistry 6-1.Equilibrium (Chemical Equilibrium)Le-Chaterlier principle and It’s application

Easy

Consider the following reaction for which the change in enthalpy is positive:
$2 A_{(g)} + B_{(g)} \rightleftharpoons C_{(g)} + D_{(g)}$
Which of the following will not affect the equilibrium?

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A
Change in concentration of reactants
B
Change in pressure
C
Change in temperature
D
Presence of catalyst

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6-1.Equilibrium (Chemical Equilibrium)

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Le-Chaterlier principle and It’s application

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Consider the following reaction for which the change in enthalpy is positive:$2 A_{(g)} + B_{(g)} \rightleftharpoons C_{(g)} + D_{(g)}$Which of the following will not affect the equilibrium?

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Consider the following reaction for which the change in enthalpy is positive:
$2 A_{(g)} + B_{(g)} \rightleftharpoons C_{(g)} + D_{(g)}$
Which of the following will not affect the equilibrium?

$2x_{(g)} + y_{(g)} \rightleftarrows 2z_{(g)} + 80 \ kcal$
Which combination gives the highest yield of $z$ at equilibrium?