# What happens when a weak acid and a weak base ionize in water?

Aug 6, 2017

They slightly increase the concentration of the characteristic cation or characteristic anion of the solvent........

#### Explanation:

Acid strength depends on the extent of the following reaction......

$H X \left(a q\right) + {H}_{2} O \left(l\right) r i g h t \le f t h a r p \infty n s {H}_{3} {O}^{+} + {X}^{-}$

For strong acids, $X = \text{halide} , X \ne F , X = C l {O}_{4}^{-} , X = H S {O}_{4}^{-}$, the given equilibrium lies almost entirely to the right as we face the page, and the acid is almost completely ionized in solution.

For weak acids, $H X = H F , {H}_{3} P {O}_{4} , {H}_{3} C - C {O}_{2} H , H N {O}_{2} ,$....the equilibrium lies to some extent to the left, and the starting acid is INCOMPLETELY ionized.