Posted by Hannah on Sunday, February 19, 2012 at 6:07pm.
The why would the concentration of any reactant change the rate constant?
I just thought that if the concentration was doubled there would be more molecular collisions which would increase the rate law. So only the first two are correct then?
there is a difference between the rate constant, and the rate. Changing concentration affects rate.
Oh ok I understand, thank you.
So wouldn't a catalyst just speed up the rate too and not the rate constant?
Yes, that's what a catalyst does. It does not change k.
so then answers 2 and 3 are not correct?
That's right. 2 and 3 are not right.
Ok, thank you for your help!!
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