Depending on how deeply you want to dig it will be either neutral (answer than 99.99% of teachers will accept) or very slightly acidic (fact that remaning 0.01% of teachers is aware of
In NaCl solution you have very weak Bronsted-Lowry base (Cl-
) and very weak Bronsted-Lowry acid (Na+
). They are so weak, you may treat them as simply neutral. If you want to be a nitpicker - Na+
is strong enough Bronsted-Lowry acid to give measurable change in pH (0.1M NaCl solution should have pH of 6.98). Cl-
- while technically a Bronsted-Lowry base - is too weak a base to give observable effects.
But for all practical purpose you may safely ignore both Na+
being an acid and Cl-
being a base.