Book Problem 7A.17

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Madelyn Romberg 1H
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Joined: Tue Oct 02, 2018 12:16 am

Book Problem 7A.17

Postby Madelyn Romberg 1H » Tue Mar 10, 2020 12:27 am

You are given a table with the initial concentrations and the intial rates for the reaction A+B+C= Products

How do you tell if a reaction is zero order with respect to a reactant? Is it if the other two concentrations are the same and only the reactant of interest concentration changes and it still yields the same initial rate?

{A}= 1.25 {A}= 1.25
{B}=3.0 {B}= 3.0
{C}= 2.0 {C}= 3.0
rate: 0.68 rate: 0.68 (only c changed but the rate was the same so the reaction rate is independent of [C]?)

Posts: 104
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Re: Book Problem 7A.17

Postby alicechien_4F » Tue Mar 10, 2020 1:01 am

A reactant is zero order if changing the concentration of that reactant has no effect on the rate constant.

Nawal Dandachi 1G
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Re: Book Problem 7A.17

Postby Nawal Dandachi 1G » Tue Mar 10, 2020 1:07 am

Because the rate constant did not change, then it's zero order.

Naneeta Desar 1K
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Re: Book Problem 7A.17

Postby Naneeta Desar 1K » Tue Mar 10, 2020 1:08 am

When the reaction rate does not change for the experiments you look at that means that the reactant is 0 order.

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