Chemistry Forums for Students => High School Chemistry Forum => Topic started by: nosaj on April 24, 2015, 09:21:56 PM
Title: Equilibrium Constant
Post by: nosaj on April 24, 2015, 09:21:56 PM
In Honors Chemistry, we learned that for a reaction aA+bB ::equil:: cC+dD, the equilibrium constant is
[tex]K_{eq}=\frac{[C]^c [D]^d}{[A]^a[ B]^b}[/tex]
Could someone help me understand why this formula is true? Thanks!
Title: Re: Equilibrium Constant
Post by: Borek on April 25, 2015, 02:34:44 AM
Depends on what you know about thermodynamics - it can be relatively easily derived from ΔG considerations, but if you have never heard about the free energy such a derivation won't do you much good.
Title: Re: Equilibrium Constant
Post by: nosaj on April 25, 2015, 09:59:55 AM
We did learn about ΔG in class. For example, I know that [itex]\Delta G = \Delta H - T \Delta S[/itex].
Title: Re: Equilibrium Constant
Post by: Borek on April 25, 2015, 06:29:49 PM