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1/2 life

Posted: Wed Mar 06, 2019 1:54 pm
by Tatum Keichline 2B
Does the 1/2 life for first order depend on the initial concentration like it does for zero and second-order reactions?

Re: 1/2 life

Posted: Wed Mar 06, 2019 2:37 pm
by David Effio 1H
No, if you look at the equation, the half-life only takes into account the rate constant, which is dependent on temp and activation energy only.

Re: 1/2 life

Posted: Wed Mar 06, 2019 3:59 pm
by Rachel-Weisz3C
1/2 life for first order is the only order that is not dependent on initial concentration but just the reaction constant (k), with units 1/s.

Re: 1/2 life

Posted: Wed Mar 06, 2019 4:17 pm
by Danielle_Gallandt3I
No, based on the half-life equations it is not affected by initial concentration, only the rate constant. This means that the half life is actually more dependent on other factors, such as temperature

Re: 1/2 life

Posted: Wed Mar 06, 2019 9:48 pm
by SydBenedict2H
Why is it that for only the first order it isn't dependent on the initial concentration?

Re: 1/2 life

Posted: Wed Mar 06, 2019 11:33 pm
by Raj_Bains_2C
The half-life for first order dow not depend on the initial concentration.

Re: 1/2 life

Posted: Wed Mar 06, 2019 11:33 pm
by Raj_Bains_2C
Raj_Bains_2C wrote:The half-life for first order dow not depend on the initial concentration.


*does not*

Re: 1/2 life

Posted: Thu Mar 07, 2019 12:02 am
by Casandra
The 1/2 life for a first order does not depend on the initial concentration.