Change in Equilibrium Constant

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Rakhi Ratanjee 1D
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Joined: Fri Sep 29, 2017 7:04 am

Change in Equilibrium Constant

Postby Rakhi Ratanjee 1D » Sat Dec 09, 2017 5:57 pm

Does the equilibrium constant change when the stoichiometric constants in the equation are halved?

Emily Oren 3C
Posts: 50
Joined: Fri Sep 29, 2017 7:07 am

Re: Change in Equilibrium Constant

Postby Emily Oren 3C » Sat Dec 09, 2017 7:58 pm

Yes the equilibrium constant will change if the stoichiometric coefficients are halved. For example for the reaction 2A <--> 3B

K1 = [B]^3 / [A]^2

which is not the same as the equilibrium constant of the reaction A <--> 3/2B

K2 = [B]^3/2 / [A]

because the coefficients become the exponents in the K expression.

Vincent Kim 2I
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Joined: Fri Sep 29, 2017 7:04 am
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Re: Change in Equilibrium Constant

Postby Vincent Kim 2I » Sat Dec 09, 2017 8:05 pm

The equilibrium constant K only changes when the concentrations of the reactants and products are changed, not when their stoichiometric constants are.


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