Question
30 cc of $\frac{M}{3}$ HCl, 20 cc of $\frac{M}{2}$ $\text{HNO}_3$, and 40 cc of $\frac{M}{4}$ NaOH solutions are mixed, and the total volume is made up to 1 $\mathrm{dm^3}$. The pH of the resulting solution is
30 cc of $\frac{M}{3}$ HCl, 20 cc of $\frac{M}{2}$ $\text{HNO}_3$, and 40 cc of $\frac{M}{4}$ NaOH solutions are mixed, and the total volume is made up to 1 $\mathrm{dm^3}$. The pH of the resulting solution is