Question

If K1 is the equilibrium constant at temperature T1 and K2 is the equilibrium constant at temperature T2 ,and if T2>T1 and reaction is endothermic then

Answer 1

If K1 is the equilibrium constant at temperature T1 and K2 is the equilibrium constant at temperature T2,and if T2>T1 and reaction is endothermic then 1. K2K1 4. All of these. K1 K2 for exothermic reaction.

Answer 2

If K₁ is the equilibrium constant at temperature T₁ and K₂ is the equilibrium constant at temperature T₂ ,and if T₂>T₁ and reaction is endothermic then:

K₂>K₁

Explanation:

Effect of temperature on K  

We know that K=Kf/Kb

Now if temperature is increased, then the rate of reaction also increases. The extent of reaction depends upon activation energy of reactants i.e Rf and Rb will be different and also the value of Kf and Kb .So, the value of K will also change.

• For endothermic reactions: Kf>Kb. Therefore, K increases.

• For exothermic reactions: Kf<kb .Therefore, K decreases.  

If the reaction is endothermic, an increase in temperature will cause the forward reaction to occur.

This will  increase the amounts of the products and decreasing the amounts of reactants.

If the temperature is Lowered , the temperature will produce the opposite response that is it will reverse the direction of reaction .