# What is the pH of a salt and water solution?

##### 1 Answer
Jun 23, 2016

For natrium chloride, $p H \cong 7$

#### Explanation:

Solutions of $N a C l$ are $p H$ neutral. The is the salt of a strong acid and a strong base. Salts of weak acid, for instance, $N a F$ (and note that $H F$ is a fairly weak acid), give an alkaline solution in water:

${F}^{-} \left(a q\right) + {H}_{2} O \left(l\right) \rightarrow H F \left(a q\right) + H {O}^{-}$

The conjugate base of a weak acid, demonstrably competes for the proton.

And likewise such salts as $H S {O}_{4}^{-} N {a}^{+}$, sodium bisulfate, would give acidic solutions.