Endothermic Rxn and Le Chatlier

[purplelightning]

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Cooling an endothermic reaction results in which of the following?

A. The mole fraction of the product will decrease
B. The mole fraction of the reactant will decrease
C. The mole fraction of the product will increase
D. The ratio of the products to reactants will increase.

I understand that in an endothermic reaction, removing heat will shift the reaction to the left. That means there will be more reactants than products. The correct answer is D and that makes sense.

However, I'm confused why A isn't correct. How do I handle mole fraction in such a problem?

TIA for the help SDN!

 

[LianaStan]

If there are more reactants how is D correct?

 

[purplelightning]

Yeah D doesn't make sense. I misread the answer key. THE CORRECT ANSWER IS A. Thanks LianaStan!