rate law problem given in class

[Zellmer, Robert]

For those of you not coming to class I discussed the following
problem.  Just a reminder, I don't have to do this and sometimes
don't.  If you don't come to class you may not get the next problem.
You can also find this at the link sent in the previous e-mail.

The following is a problem I want you to think about.  I mentioned
this in class and told everyone to think about it.  I will NOT be giving
the answer and neither will the TAs.  You need to work on it yourself
and come see me or a TA to see if you did it correctly.  We will
tell you yes or no.  If you don't have it correct we will give you
hints but will not tell you how to do it.  That is up to you to figure
out.  If you get it correct don't simply give someone else the answer.
You can help them but only tell them if they are or aren't on the right
track.

What you have is the following:

1)  r = k [A]^n (a general rate law)

2)  Experimental data of rate and [A].  For instance:

      rate        [A]
      ----        ---
      1.0        1.0
      3.0        2.0
      4.5        3.0

Something like that (not actual data).

3)  You can mathematically manipulate the equation in (1) so you
get a linear equation.  Then you can plot something that will
graphically give you k and n in a fairly easy way (somehow related
to the slope and intercept, not necessarily in that order).  What
you're going to wind up plotting is related to the data given above
in item #2.

You do NOT have to do any integration.  You won't be using an
integrated rate law.  You don't have [A] and time data.  You
have rate and [A] data.

This is NOT an initial rate method problem.  That is NOT
how I want you to think about this.

Think about what you might be able to do mathematically to
the equation in (1) to get a linear equation.  Then think
about what you need to plot so that you can get k and n.

Dr. Zellmer
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