Quadratic

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Savannah Mance 4G
Posts: 107
Joined: Fri Aug 30, 2019 12:17 am

Quadratic

Postby Savannah Mance 4G » Sun Jan 12, 2020 9:41 pm

For 5I.13 I did the ice table correctly and got 0.0001-x for Cl2 and +2x for 2Cl. I did the quadratic to find x and got 5.6*10^-6 and then plugged it in to get 1.12*10^-5 for the 2Cl but it's not the right answer. I'm not sure what I'm doing wrong.

Skyllar Kuppinger 1F
Posts: 52
Joined: Thu Jul 25, 2019 12:16 am

Re: Quadratic

Postby Skyllar Kuppinger 1F » Sun Jan 12, 2020 10:24 pm

are you sure you're using the right K value? I made this same mistake at first-- the problem says to refer to a table, and the table gives both K and Kc. Make sure for this problem you're using Kc bc you are given mol and volume so it would be in terms of concentration not pressure.

Nick Lewis 4F
Posts: 111
Joined: Wed Sep 18, 2019 12:18 am

Re: Quadratic

Postby Nick Lewis 4F » Sun Jan 12, 2020 10:32 pm

It can get easy to get all your units mixed up, so make sure you are consistenly measuring Kc or Kp depending on the context


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