Page 1 of 1

### Which Step is Slower?

Posted: Mon Mar 05, 2018 1:15 pm
when going through reaction mechanisms, how can you determine which step is slower?

### Re: Which Step is Slower?

Posted: Mon Mar 05, 2018 1:17 pm
The slower step is which ever reaction shows the rate law.

### Re: Which Step is Slower?

Posted: Mon Mar 05, 2018 2:09 pm
The slow step is also the step with the largest activation energy

### Re: Which Step is Slower?

Posted: Mon Mar 05, 2018 2:13 pm
The slowest step in a reaction is the one with the higher activation energy.

### Re: Which Step is Slower?

Posted: Mon Mar 05, 2018 2:21 pm
As the slowest step always determines the overall reaction, find the elementary step whose rate law is the same as the overall reaction rate law, then that elementary step would be the slowest and be the rate determining step. Hope it helps.

### Re: Which Step is Slower?

Posted: Mon Mar 05, 2018 2:22 pm
You can determine the slowest step by the determination rate or the part of the graph that requires the most activation energy.

### Re: Which Step is Slower?

Posted: Mon Mar 05, 2018 2:29 pm
Many times, a problem will give you mechanisms, and in turn tell you explicitly which step is the slow mechanism.

### Re: Which Step is Slower?

Posted: Tue Mar 06, 2018 12:31 am
Usually the problem will tell you which step in the mechanism is the slow step, but if it asks for which step is slow, you just need to find which step matches the overall rate law.

### Re: Which Step is Slower?

Posted: Tue Mar 06, 2018 12:42 pm
Okay this clarifies so much. thank you!