Book Problem 7A.17

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

Moderators: Chem_Mod, Chem_Admin

Madelyn Romberg 1H
Posts: 102
Joined: Tue Oct 02, 2018 12:16 am

Book Problem 7A.17

You are given a table with the initial concentrations and the intial rates for the reaction A+B+C= Products

How do you tell if a reaction is zero order with respect to a reactant? Is it if the other two concentrations are the same and only the reactant of interest concentration changes and it still yields the same initial rate?

EX:
{A}= 1.25 {A}= 1.25
{B}=3.0 {B}= 3.0
{C}= 2.0 {C}= 3.0
rate: 0.68 rate: 0.68 (only c changed but the rate was the same so the reaction rate is independent of [C]?)

alicechien_4F
Posts: 104
Joined: Sat Jul 20, 2019 12:15 am

Re: Book Problem 7A.17

A reactant is zero order if changing the concentration of that reactant has no effect on the rate constant.

Nawal Dandachi 1G
Posts: 102
Joined: Sat Sep 28, 2019 12:16 am

Re: Book Problem 7A.17

Because the rate constant did not change, then it's zero order.

Naneeta Desar 1K
Posts: 106
Joined: Fri Aug 09, 2019 12:15 am

Re: Book Problem 7A.17

When the reaction rate does not change for the experiments you look at that means that the reactant is 0 order.

Return to “General Rate Laws”

Who is online

Users browsing this forum: No registered users and 1 guest