The Reaction Quotient Video Lessons

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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

FREE Expert Solution
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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:

84% (230 ratings)
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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

Frequently Asked Questions

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the The Reaction Quotient concept. You can view video lessons to learn The Reaction Quotient. Or if you need more The Reaction Quotient practice, you can also practice The Reaction Quotient practice problems.

What is the difficulty of this problem?

Our tutors rated the difficulty ofConsider this system at equilibrium.A(aq) ⇌ B(aq)        ΔH medium difficulty.

How long does this problem take to solve?

Our expert Chemistry tutor, Dasha took 2 minutes and 13 seconds to solve this problem. You can follow their steps in the video explanation above.

What professor is this problem relevant for?

Based on our data, we think this problem is relevant for Professor Mohr's class at UIC.