# Proved the equilibrium formula

1. Apr 27, 2004

### Haftred

In my general chemistry class, my professor proved the equilibrium formula:

Keq = ([C]c[D]d)/([A]ab)

However, I lost my notes ; hopefully someone can help derive it for me. Thanks.

2. Apr 27, 2004

### Mitch

3. Apr 28, 2004

### Haftred

it's not proved in my book

4. Apr 28, 2004

### himanshu121

Write Law of mass action for forward and backward rxn

At equilibrium rate of forward rxn= rate of backward rxn
And $$K_{eq} = \frac{k_f}{k_b}$$

Where kf & kb represent the rate constant for fwd & bkw rxn