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Chemistry Forums for Students => Physical Chemistry Forum => Topic started by: Ice-cream on June 15, 2005, 09:33:48 AM

Title: equilibrium constant
Post by: Ice-cream on June 15, 2005, 09:33:48 AM
for equilibrium constants, when K<1, the reactants are favoured, when K>1 the products are favoured and when K=1...what happens?
Title: Re:equilibrium constant
Post by: angelguy on June 15, 2005, 09:40:42 AM
It means that the gibbs energy change between the reactant and the product is zero. Which is why k =1 as in del G = -RTlnK.

Thanks,
angelguy


Title: Re:equilibrium constant
Post by: Juan R. on June 16, 2005, 04:02:47 AM
For

A <--> B

in the concentration approx.

K = CB/CA

for K = 1, CB = CA. There is not preference between reactants and products. Both are equally "stable".

An "trivial" example is ammonia inversion

          H \
A =    H - N:
          H /

            / H
B =    :N - H
            \ H