Kc calc with Cubic Equations

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Ashley Lopez 3J
Posts: 85
Joined: Wed Sep 30, 2020 10:06 pm

Kc calc with Cubic Equations

Postby Ashley Lopez 3J » Sun Jan 10, 2021 12:19 pm

Are all the cases of cubic equations going to have small values of x where we have to approximate? If not, what is a measurement of knowing when the x is too small and we need to approximate?

Stuti Pradhan 2J
Posts: 155
Joined: Wed Sep 30, 2020 9:32 pm
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Re: Kc calc with Cubic Equations

Postby Stuti Pradhan 2J » Sun Jan 10, 2021 12:55 pm

If the K value is less than 10^-4, that means the reactants are strongly favored and x will not significantly change the concentration of the reactants, so the approximation will work. I believe for this class most cubic equations will have small K values where the approximation can be applied, but I am not completely sure.

Hope this helps!

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