### homework 15.19 part c

Posted:

**Sun Mar 04, 2018 6:03 pm**Can someone explain how to get the right answer for part c please!!

Created by Dr. Laurence Lavelle

https://lavelle.chem.ucla.edu/forum/

https://lavelle.chem.ucla.edu/forum/viewtopic.php?f=145&t=28886

Page **1** of **1**

Posted: **Sun Mar 04, 2018 6:03 pm**

Can someone explain how to get the right answer for part c please!!

Posted: **Sun Mar 04, 2018 6:12 pm**

Hi Sarah,

When I did this problem myself, I determined the rate law to be k=[A][B]^2[C]^2. Given this, you can solve part c in two ways, by applying this equation to both the values of concentrations and initial rates for experiment 3 and experiment 4. Knowing that the rate constant is not dependent on concentration, it checks out that k is equal for both experiments regardless of the different concentrations in each.

When I did this problem myself, I determined the rate law to be k=[A][B]^2[C]^2. Given this, you can solve part c in two ways, by applying this equation to both the values of concentrations and initial rates for experiment 3 and experiment 4. Knowing that the rate constant is not dependent on concentration, it checks out that k is equal for both experiments regardless of the different concentrations in each.