Discussion Forum



1)

For a reaction taking place in a container in equilibrium with its surroundings, the effect of temperature on its equilibrium constant K in terms of change in entropy is described by


A) With the increase in temperature, the value of K for endothermic reaction increase because of unfavourable change in entropy of the surrounding decrease

B) With the increase in temperature, the value of K for exothermic reaction decrease because of favourable change in entropy of the surroundings decreases

C) With the increase in temperature, the value of K  for endothermic reaction increases because the entropy change of the system is negative

D) With the increase in temperature, the value of K for exothermic reaction decreases because the entropy change of the system is positive

Answer:

Option A,B

Explanation:

$\triangle S_{sun}=\frac{-\triangle H}{T_{sun}}$ 

 For endothermic reaction, If Tsun increase , Δ Ssun  will increase. For an exothermic reaction, If Tsun  increases.Δ Ssun will decrease