Problem: Consider this system at equilibrium.A(aq) ⇌ B(aq)        ΔH = -750 kJ/molWhat can be said about Q and K immediately after an increase in temperature?A) Q > K because Q increasedB) Q > K because K decreasedC) Q < K because Q decreasedD) Q < K because K increasedE) Q = K because neither changed How will the system respond to a temperature increase?A) shift leftB) shift rightC) no change

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FREE Expert Solution
FREE Expert Solution

We are being asked what would happen to the equilibrium constant (K) and the reaction quotient (Q) of the reaction at equilibrium when the temperature is increased.

To determine what would be the effect of the temperature in the equilibrium reaction, let’s first identify if the reaction is endothermic or exothermic.

Endothermic reaction: 

ΔH > 0
the system or the reaction is absorbing heat or taking heat from the surrounding

Exothermic reaction:

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Problem Details

Consider this system at equilibrium.

A(aq) ⇌ B(aq)        ΔH = -750 kJ/mol

What can be said about Q and K immediately after an increase in temperature?

A) Q > K because Q increased

B) Q > K because K decreased

C) Q < K because Q decreased

D) Q < K because K increased

E) Q = K because neither changed

How will the system respond to a temperature increase?

A) shift left

B) shift right

C) no change