Rate Laws and Temperature


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Meigan Wu 2E
Posts: 66
Joined: Fri Sep 28, 2018 12:29 am
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Rate Laws and Temperature

Postby Meigan Wu 2E » Tue Mar 05, 2019 1:35 am

How do rate laws relate to temperature in regards to equations?

Kristen Kim 2K
Posts: 70
Joined: Fri Sep 28, 2018 12:16 am

Re: Rate Laws and Temperature

Postby Kristen Kim 2K » Tue Mar 05, 2019 8:52 am

The constant k in the differential rate law depends on temperature and activation energy.
RATE = k[R]^n

Jake Gordon 1A
Posts: 61
Joined: Fri Sep 28, 2018 12:15 am

Re: Rate Laws and Temperature

Postby Jake Gordon 1A » Tue Mar 05, 2019 10:23 am

I agree, I think the calculated k only applies at the given temperature. If you increase temperature the molecules have more Kinetic energy and this will alter the probability that they run into each other with proper orientation and sufficent energy and therefore k must be a different value to have the law correspond with experimental values at the new temperature.

904914909
Posts: 60
Joined: Fri Sep 28, 2018 12:26 am

Re: Rate Laws and Temperature

Postby 904914909 » Wed Mar 06, 2019 5:29 pm

k once calculated is only for that temperature, which is why we have the Arrhenius equation to help calculate the new k when temperature changes

Lorena Zhang 4E
Posts: 63
Joined: Fri Sep 28, 2018 12:16 am

Re: Rate Laws and Temperature

Postby Lorena Zhang 4E » Wed Mar 06, 2019 8:48 pm

Depending on what reaction's happening, the change of temperature would affect the rate of reaction. Therefore, we can conclude that since the concentration stays the same, k has to change.


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