## 15.19 6th edition

$aR \to bP, Rate = -\frac{1}{a} \frac{d[R]}{dt} = \frac{1}{b}\frac{d[P]}{dt}$

Rian Montagh 2K
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Joined: Fri Sep 28, 2018 12:15 am

### 15.19 6th edition

Why is the answer for 15.19 c 2.85 x 10^12? I keep on only getting 2.85. I thought about changing the units to mols but the answer key has the answer in mmols.

Chem_Mod
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### Re: 15.19 6th edition

It would help to post your work to see where the error is!

Lasya Gudipudi 1A
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Joined: Fri Sep 28, 2018 12:15 am

### Re: 15.19 6th edition

I am having the same issue too. Here is my work:
Attachments

Rian Montagh 2K
Posts: 60
Joined: Fri Sep 28, 2018 12:15 am

### Re: 15.19 6th edition

Lasya Gudipudi 1A wrote:I am having the same issue too. Here is my work:

I did the problem the same way and got those answers as well.

Jeannine 1I
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Joined: Fri Sep 28, 2018 12:27 am

### Re: 15.19 6th edition

I think it's because for each concentration, you need to convert the mmol to mol, because the number gets smaller as you square, and multiply. And it won't get you the same answer if you just convert from mol to mmol at the end, so you have to convert before then.