15.19 (a)

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Gavin Kellerman 1D
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Joined: Sat Jul 09, 2016 3:00 am

15.19 (a)

Postby Gavin Kellerman 1D » Tue Mar 06, 2018 10:37 pm

While calculating for the order of reactant C I found that the rate 457 divided by the rate 50.8 is 8.996. I'm assuming that because there's no other way to solve the problem and get a whole number and because experimental data won't usually be precise it's ok to round up to 9, but is there anything that should be done if a less round-able value was found?

Morgan Baxter 1E
Posts: 50
Joined: Thu Jul 27, 2017 3:00 am

Re: 15.19 (a)

Postby Morgan Baxter 1E » Tue Mar 06, 2018 11:00 pm

If the number that you get does not easily come out to a number that can easily round to whole number, it is likely that you have made an error in calculations. If you get an answer like that, make sure you go back and check your work.

Karen Ung 2H
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Re: 15.19 (a)

Postby Karen Ung 2H » Tue Mar 06, 2018 11:07 pm

I got that answer too. I believe it is fine to round the number to 9.

Jessica Benitez 1K
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Joined: Fri Sep 29, 2017 7:04 am

Re: 15.19 (a)

Postby Jessica Benitez 1K » Thu Mar 08, 2018 5:59 pm

Yes it is okay to round up to 9.
When you take the ratios of the concentrations you should get 3.
Then we solve for n in 3^n=9 which is n=2 making this second order.

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