## Intermediate vs catalyst

Arrhenius Equation: $\ln k = - \frac{E_{a}}{RT} + \ln A$

Jane Burgan 1C
Posts: 73
Joined: Fri Sep 28, 2018 12:15 am

### Intermediate vs catalyst

What are differences between intermediates and catalysts?

Tameen Ahmed 4C
Posts: 30
Joined: Fri Sep 28, 2018 12:19 am

### Re: Intermediate vs catalyst

A catalyst is consumed by a step but regenerated by a later step. An intermediate is created by a step but consumed by a later step.

Rhea Churi 4K
Posts: 62
Joined: Fri Sep 28, 2018 12:28 am

### Re: Intermediate vs catalyst

Intermediate is created and then used up throughout the steps.
A catalyst is there when the reaction begins and is then recreated later on.

Posts: 60
Joined: Fri Sep 28, 2018 12:16 am

### Re: Intermediate vs catalyst

A catalyst doesn't get used up in a reaction, so even if it is used up in one of the steps, it'll be regenerated in another step. Intermediates are the products of one step that are then used as reactants in a following step.

Erin Kim 2G
Posts: 75
Joined: Fri Sep 28, 2018 12:26 am

### Re: Intermediate vs catalyst

A catalyst is used up in the beginning and then later recreated.
An intermediate is not there initially but is later formed as a product which cancels out with the next step.

Millicent Navarro 1I
Posts: 61
Joined: Fri Sep 28, 2018 12:25 am

### Re: Intermediate vs catalyst

Catalyst: There to begin with
Intermediate: Formed, not reactant/product

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

### Re: Intermediate vs catalyst

Intermediates exists to show the reaction mechanism and it cancels out if you combine the separate steps together. However, catalyst is consumed and will be regenerated in the next step, and it functions to lower the activation energy.

Danny Zhang 4L
Posts: 62
Joined: Fri Sep 28, 2018 12:26 am

### Re: Intermediate vs catalyst

Catalysts appear as a reactant for the first step of the reaction mechanism, while intermediates are formed during the reaction. They are both left out of the overall equation of the reaction.

Nghi Nguyen 2L
Posts: 61
Joined: Fri Sep 28, 2018 12:18 am

### Re: Intermediate vs catalyst

an intermediate is created and used up in a reaction while a catalyst is present in the beginning and the end of a reaction