7A7


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smurphy1D
Posts: 51
Joined: Mon Nov 18, 2019 12:18 am

7A7

Postby smurphy1D » Thu Mar 12, 2020 9:24 am

Why are all of the units different for each order of reaction?

asannajust_1J
Posts: 105
Joined: Wed Sep 11, 2019 12:16 am
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Re: 7A7

Postby asannajust_1J » Thu Mar 12, 2020 9:29 am

the units for k are 1/M^(n-1)*s. n being the order of the reaction. Thus, if the reaction is first order the units are 1/s and second order 1/Ms and so on.

Luc Zelissen 1K
Posts: 57
Joined: Mon Jun 17, 2019 7:23 am

Re: 7A7

Postby Luc Zelissen 1K » Thu Mar 12, 2020 10:25 am

For order zero, the rate constant has units of mol·L−1·s−1 (or M·s−1)
For order one, the rate constant has units of s−1
For order two, the rate constant has units of L·mol−1·s−1 (or M−1·s−1)
And for order three, the rate constant has units of L2·mol−2·s−1 (or M−2·s−1)

Tanmay Singhal 1H
Posts: 143
Joined: Sat Jul 20, 2019 12:16 am

Re: 7A7

Postby Tanmay Singhal 1H » Thu Mar 12, 2020 1:01 pm

they use different ratios and thus the units are different


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