Yes, the pH of a $0.1M$ solution of $HNO_3$ and the pH of a $0.1M$ solution of $HCl$ have the same value.
Work Step by Step
- Since both $HNO_3$ and $HCl$ are strong acids, the hydronium concentration will be = 0.1M for both solutions. ** Let's call the $HNO_3$ solution: (a), and the $HCl$ solution: (b). (a) $[H_3O^+] = [HNO_3] = 0.1M$ (b) $[H_3O^+] = [HCl] = 0.1M$ - With the same hydronium concentration, the pH will be the same. (a) $pH = -log(0.1M) = 1$ (b) $pH = -log(0.1M) = 1$