K value related to half life

$aR \to bP, Rate = -\frac{1}{a} \frac{d[R]}{dt} = \frac{1}{b}\frac{d[P]}{dt}$

JennyCKim1J
Posts: 51
Joined: Fri Sep 29, 2017 7:04 am

K value related to half life

Why is large k = fast reaction?

Also, just in general, why do we want to know half-life?

Esin Gumustekin 2J
Posts: 57
Joined: Thu Jul 27, 2017 3:01 am

Re: K value related to half life

For all half life equations, there is always an inverse relationship between k and time. For this reason, a large k means time is small which means that it is a fast reaction. Hope this helps!

Chem_Mod
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Re: K value related to half life

Hey!!! So k is your rate constant. Rate=k(reactant) so when you increase the value of k you're increasing the rate of the reaction.
Hope this helps! :)