Slow Reaction

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Ju-Wei Wang 1I
Posts: 31
Joined: Fri Sep 29, 2017 7:05 am

Slow Reaction

Postby Ju-Wei Wang 1I » Sat Mar 10, 2018 2:38 pm

This is probably a dumb question, but how do you determine which step is the slow step?

Posts: 50
Joined: Thu Jul 27, 2017 3:01 am

Re: Slow Reaction

Postby SitharaMenon2B » Sat Mar 10, 2018 3:26 pm

The slow step is the step with the largest activation energy, and is the rate determining step (so the rate for the slow step will match the experimentally determined rate)

Kayla Danesh 1F
Posts: 38
Joined: Thu Jul 13, 2017 3:00 am

Re: Slow Reaction

Postby Kayla Danesh 1F » Sat Mar 10, 2018 5:21 pm

To add to what the person above said, it also usually is the step with that has a buildup quantity of its starting reactant. The reactant is present in large amounts, so we know that the rate of the slow reaction is dependent on the reaction itself, not due to a lack of reactants.

Michelle Lee 2E
Posts: 64
Joined: Thu Jul 27, 2017 3:01 am

Re: Slow Reaction

Postby Michelle Lee 2E » Sat Mar 10, 2018 11:21 pm

Adding on, when looking at which step's rate law matches the experimentally found rate law, if something doesn't look exactly the same, there is a probability that there's a transition step. In that case, look for the step that matches the rate law the most (has the same number of components maybe) and try substitution.

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