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Gabriela Carrillo 1B
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Postby Gabriela Carrillo 1B » Thu Feb 22, 2018 3:04 pm

Is the concentration of CH3Br raised to the power of 1.2 in the rate law for the reaction? What does 1.2 imply?

Johann Park 2B
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Re: 15.15

Postby Johann Park 2B » Thu Feb 22, 2018 3:18 pm

The concentration increased by a factor of 1.2 means that the rate of the reaction also increases by a factor of 1.2:

1.2Rate = k [1.2CH3Br]x[OH-]y

melissa carey 1f
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Re: 15.15

Postby melissa carey 1f » Wed Feb 28, 2018 12:37 pm

Since the rate increase is linear to reactant concentration increase, it implies it's first order.

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Re: 15.15

Postby Chloe1K » Wed Feb 28, 2018 9:19 pm

I think the book just gave a random increase to concentration to show that if rate increases by the same factor it is a first order reaction.

Janine Chan 2K
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Re: 15.15

Postby Janine Chan 2K » Wed Feb 28, 2018 9:34 pm

Doesn't ln[A] vs. time have to be linear to assume it's first order? Or in this case we're just saying that in this question, we can see that multiplying by a factor of 1.2 will increase the rate by a factor of 1.2, which aligns with the first order differential rate law rate = k[A].

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