Textbook question 5.39

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Paige Lee 1A
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Textbook question 5.39

Postby Paige Lee 1A » Mon Jan 13, 2020 2:56 pm

For part A, I found the equilibrium concentrations when V=1L.
For part B, I found the equilibrium concentrations when V=0.5L.

For part A I got 0.01 for x instead of 0.0065
For part B I got 0.02 for x instead of 0.015

I'm not sure where I went wrong?

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Re: Textbook question 5.39

Postby Christineg1G » Mon Jan 13, 2020 3:49 pm

For part (a) you should double check their I.C.E table as well as the expression for Kc which should be (N2O4)/(NO2)^2. After inputting the values from your I.C.E table into the Kc expression, you should be solving for the equation: 6.4x10^2 x^2 - 14x + 0.064=0. After you plug this equation into the quadratic formula, you should get the answer of 0.0065 for the concentration of N2O4. For part (b) you would follow the same procedure, but the initial concentration of N02 would be 0.040 mol L-1.

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