Constant Calculation

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Daniel Rivas 3L
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Joined: Fri Sep 29, 2017 7:07 am

Constant Calculation

Postby Daniel Rivas 3L » Mon Nov 20, 2017 10:13 pm

So as I noticed in lecture, when you are calculating the equilibrium constant for the opposite side of the equation, you can calculate it by taking the reciprocal of the constant of the first side. Is this always the case? Or was it only for the equation in lecture?

Hena Sihota 1L
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Joined: Fri Sep 29, 2017 7:07 am
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Re: Constant Calculation

Postby Hena Sihota 1L » Mon Nov 20, 2017 10:25 pm

By "the opposite side of the equation" do you mean the reverse reaction? If so, yes. If you have the value of the equilibrium constant for the forward reaction, you can calculate the value of the equilibrium constant for the reverse reaction by taking the reciprocal of the equilibrium constant for the forward reaction and vice versa.

Maddie Hong 1I
Posts: 21
Joined: Fri Sep 29, 2017 7:04 am

Re: Constant Calculation

Postby Maddie Hong 1I » Tue Nov 21, 2017 1:08 pm

The equilibrium constant of a reaction is the inverse of the equilibrium constant of its reverse reaction and vice versa. For example,
aA + bB <-> cC + dD
K of original reaction= ([C]^c [D]^d) / [A]^a [B]^b

cC + dD <-> aA + bB
K of reverse reaction= ([A]^a [B]^b) / [C]^c [D]^d
This equation is equivalent to
___________1______________, or 1/(K of the original reaction)
([C]^c [D]^d) / [A]^a [B]^b


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