How does a homogeneous catalyst affect (a) the rate law; (b) the equilibrium constant?  [ENDORSED]

Arrhenius Equation:

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Adriana Rangel 1A
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How does a homogeneous catalyst affect (a) the rate law; (b) the equilibrium constant?

Postby Adriana Rangel 1A » Sat Mar 10, 2018 9:17 pm

This was a self-test question in the book:
How does a homogeneous catalyst affect (a) the rate law; (b) the equilibrium constant?
Could someone please explain in simple terms? Thank you!

Matthew 1C
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Re: How does a homogeneous catalyst affect (a) the rate law; (b) the equilibrium constant?

Postby Matthew 1C » Sat Mar 10, 2018 10:36 pm

for part a) since catalysts speed up the rate of a reaction the rate law would be affected in that the value of the rate would be larger than the rate of the reaction without the presence of a catalyst. for part b) the lowered activation energy means that the constant is greatly increased, which is what accounts for the increased rate

Patricia Macalalag 2E
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Re: How does a homogeneous catalyst affect (a) the rate law; (b) the equilibrium constant?

Postby Patricia Macalalag 2E » Mon Mar 12, 2018 2:59 am

For part b) isn't the answer no effect? The textbook says catalysts have no effect on the equilibrium composition.

Chem_Mod
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Re: How does a homogeneous catalyst affect (a) the rate law; (b) the equilibrium constant?  [ENDORSED]

Postby Chem_Mod » Mon Mar 12, 2018 7:21 am

I will discuss this in class this week.

Catalysts have no effect on thermodynamic parameters (equilibrium constant, etc.).

Timothy Kim 1B
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Re: How does a homogeneous catalyst affect (a) the rate law; (b) the equilibrium constant?

Postby Timothy Kim 1B » Mon Mar 12, 2018 10:21 pm

I believe it decreases the activation energy which will in turn increase the rate constant and rate of the reaction.

Christina Bedrosian 1B
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Re: How does a homogeneous catalyst affect (a) the rate law; (b) the equilibrium constant?

Postby Christina Bedrosian 1B » Tue Mar 13, 2018 11:15 am

part a increases because catalysts increase the rate of the reaction in general


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