Rate constant and half life


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Amy Lefley 1J
Posts: 60
Joined: Fri Sep 28, 2018 12:15 am

Rate constant and half life

Postby Amy Lefley 1J » Tue Mar 05, 2019 2:48 pm

Why does a higher rate constant mean a shorter half life?

Gillian Murphy 2C
Posts: 30
Joined: Fri Sep 28, 2018 12:22 am

Re: Rate constant and half life

Postby Gillian Murphy 2C » Tue Mar 05, 2019 2:53 pm

It goes through the reaction faster, so it will go down to half it's original concentration at a faster speed, making it take a shorter amount of time to do so

josie 1C
Posts: 18
Joined: Fri Sep 28, 2018 12:19 am

Re: Rate constant and half life

Postby josie 1C » Tue Mar 05, 2019 3:08 pm

the half life is the time it take for a reactant to lessen its concentration by 1/2. the faster (or higher) the rate of reaction, the less time it will take for the reactants to reach 1/2 of their original concentration.

Ray Guo 4C
Posts: 90
Joined: Fri Sep 28, 2018 12:15 am

Re: Rate constant and half life

Postby Ray Guo 4C » Tue Mar 05, 2019 3:47 pm

Because for first-order reactions.


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