Half Life for Second Order Reactions
Moderators: Chem_Mod, Chem_Admin
-
- Posts: 59
- Joined: Fri Sep 28, 2018 12:28 am
Half Life for Second Order Reactions
Why is it that for First Order Reactions the time required for the reaction to go to one fourth remaining is double the half life, but this is not true for second order reactions, as in problem 7B13 from the 7th edition?
-
- Posts: 23858
- Joined: Thu Aug 04, 2011 1:53 pm
- Has upvoted: 1253 times
Re: Half Life for Second Order Reactions
Because for 2nd order reactions the half life depends on the initial concentration.
-
- Posts: 89
- Joined: Wed Sep 30, 2020 9:33 pm
-
- Posts: 105
- Joined: Fri Sep 24, 2021 6:35 am
- Been upvoted: 1 time
Re: Half Life for Second Order Reactions
For a 1st order reaction, the half-life is constant and independent of initial conditions (hence why [A]0 is not in the half-life equation). For 0th and 2nd order reactions, the half-life is dependent on initial conditions (hence why [A]0 are in the half-life equations).
Return to “Second Order Reactions”
Who is online
Users browsing this forum: No registered users and 1 guest