[moun7]

Hello,

I have a question in which I am asked to calculate the loss rate of ozone with respect to the following reaction.

Cl + O₃ -> ClO + O₂, k(T) = 2.9x10^-11e^-260/T, where T is in Kelvins

If I am doing this correctly,

rate = k[Cl][O₃]

Now the next part asks me to calculate the rate loss of ozone with respect to the following two reactions. The concentrations and temperature are given.

Cl + O₃ -> ClO + O₂, k(T) = 2.9x10^-11e^-260/T

OH + O₃ -> HO₂ + O₂, k(T) = 2.0x10^-12e^-940/T

Do I determine the overall reaction? If so, how do I go about determining the overall rate constant? Or do I calculate the reaction rates individually and combine them? If so, how do I combine them?

Thanks a bunch.

[mjc123]

If I am doing this correctly, rate = k[Cl][O3]

I assume that's correct, but k should have units that tell you the overall order of reaction.

Do I determine the overall reaction? If so, how do I go about determining the overall rate constant? Or do I calculate the reaction rates individually and combine them? If so, how do I combine them?

There isn't one "overall" reaction, there are 2 reactions going on in parallel. Calculate the rates of each reaction and add them together.

[moun7]

Awesome. Thanks.

I kind of thought that was the case I just couldn't find anywhere that confirmed it.