Which Rate to Use When Finding K? HW Chapter 15 #19, 6th Edition

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Sophia Diaz - Dis 1B
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Which Rate to Use When Finding K? HW Chapter 15 #19, 6th Edition

Postby Sophia Diaz - Dis 1B » Mon Mar 04, 2019 7:06 pm

For part c of this problem, it asks to find the value of K but it doesn't say which experiment to use. Does this mean that we can use any experiment we want to find the value of k? I noticed that in the solutions manual that they use several experiments and get a different value of k for each one, so how do we know which experiments to use and what the correct value of k is?

Thanks!

Elizabeth Gallmeister 1A
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Joined: Fri Sep 28, 2018 12:21 am

Re: Which Rate to Use When Finding K? HW Chapter 15 #19, 6th Edition

Postby Elizabeth Gallmeister 1A » Mon Mar 04, 2019 8:47 pm

You can use any of the experiments when solving for k; it should be the same value for each because the concentrations of reactants should have the same effect on rate no matter what concentration they are at. Are you sure the k in the manual varied from experiment to experiment?

Matthew Choi 2H
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Joined: Fri Sep 28, 2018 12:18 am

Re: Which Rate to Use When Finding K? HW Chapter 15 #19, 6th Edition

Postby Matthew Choi 2H » Tue Mar 05, 2019 2:53 pm

It doesn't matter which experiment you use because k should be the same. You should definitely check again to see if the k values are different for every experiment because that shouldn't be the case. As long as you are consistent with the values of a certain reaction, then you should be good.


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