# Why equilibrium favours weak acid or weak base

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1. Oct 10, 2015

### Titan97

1. The problem statement, all variables and given/known data

Which side does the equilibrium favour?

2. Relevant equations
Equilibrium favours weak acid or weak base (I don't know why )

3. The attempt at a solution
Using the given pka values, since the reactant is the weaker acid, reactants are favoured. (Backward reaction is favoured).
But why does equilibrium favour weak acid or weak base?

2. Oct 11, 2015

### Staff: Mentor

Try to express the K of the reaction using Ka values for both acids.

3. Oct 11, 2015

### Titan97

$k=10^{-0.6}$

4. Oct 11, 2015