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EK Chapter 4 Question 79
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Emma_5484
#1 Posted : Sunday, July 05, 2020 5:09:51 PM
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Hi there,

For the Chapter 4 lecture questions in the EK I don't seem to understand the answer for question 79. It is asking for which answer is false and I selected option D which says that a catalyst shifts the reaction equilibrium to the right. However, this was not the right answer. Is it not false that a catalyst affects the equilibrium?

Thanks,
Emma
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INSTR_Katerina_102
#2 Posted : Sunday, July 05, 2020 6:24:27 PM
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Hi,

I cannot find the question you are refering to in the ICEs or the lectures - could you provide a page number or the full question here for clarification?

Thanks!
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Emma_5484
#3 Posted : Monday, July 06, 2020 3:44:10 PM
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Question:

All of the following may be true concerning catalysts and the reactions which they catalyze EXCEPT:

A.Catalysts are not used up by the reaction
B.Catalysts lower the energy of activation
C.Catalysts increase the rate of the reverse reaction
D.Catalysts shift the reaction equilibrium to the right

Answer: A
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INSTR_Katerina_102
#4 Posted : Monday, July 06, 2020 4:39:09 PM
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I agree with you. As written, I would also have said that D is not true concerning catalysts and is therefore the correct answer.

I think that this is a typo in the answer key - again I still cannot find it in my EK, so maybe this is a different version?

Catalysts cannot change reaction equilibrium.
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