Question

Equal volumes of two solutions containing $3.65gms$ of $HCl$ and $4.0gms$ of $NaOH$ respectively are mixed. The $pH$ of the mixture is:

• A. $7$
• B. $<7$
• C. $>7$
• D. $0$

Answer 1

The correct option is A $7$

3.65 grams of HCl corresponds to 0.1 mole.
4.0 grams of NaOH corresponds to 0.1 mole.
Thus HCl solution will completely neutralize NaOH solution.
The resulting solution will be neutral. Its pH will be 7.