Different k values

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Elisa Bass 4L
Posts: 61
Joined: Fri Sep 28, 2018 12:23 am

Different k values

Postby Elisa Bass 4L » Mon Mar 04, 2019 6:40 pm

Why can the value of k be different for two versions of the same reaction with the same concentration and temperature?
Last edited by Elisa Bass 4L on Mon Mar 04, 2019 6:41 pm, edited 1 time in total.

Mindy Kim 4C
Posts: 65
Joined: Fri Sep 28, 2018 12:25 am

Re: Different k values

Postby Mindy Kim 4C » Mon Mar 04, 2019 6:40 pm

This is due to activation energy. A reaction proceeds at a faster rate if it has a lower activation energy and vice versa.

marisaimbroane1J
Posts: 69
Joined: Fri Sep 28, 2018 12:23 am

Re: Different k values

Postby marisaimbroane1J » Mon Mar 04, 2019 6:56 pm

If a catalyst is added to the reaction, the activation energy is lowered and the reaction can proceed faster than without the catalyst. In biology, a catalyst is usually something like an enzyme.

Jordan Lo 2A
Posts: 85
Joined: Fri Sep 28, 2018 12:25 am

Re: Different k values

Postby Jordan Lo 2A » Mon Mar 04, 2019 7:37 pm

A catalyst is a substance that increases the rate of a chemical reaction without itself undergoing any permanent chemical change by decreasing the activation energy of a reaction


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