Which has the highest pH: 0.1 M NaC₂H₃O₂, 0.1 M NaCl, or 0.1 M NaNO₃?

The NaC₂H₃O₂ solution has the highest pH, and the NaCl has the lowest.

0.1 M NaCl solution. The hydrolysis reaction would form HCl. HCl is a strong acid (the K_a is extremely large), so you would expect that the chloride ion would not hydrolyze at all! The pH of the solution would be close to 7.
0.1 M NaC₂H₃O₂ solution. The hydrolysis reaction would form HC₂H₃O₂. HC₂H₃O₂ is a weak acid (the K_a is about 1.8x10^-5), so C₂H₃O₂- would undergo hydrolysis and the pH would be greater than 7.
0.1 M NaNO₂ solution. The hydrolysis reaction would form HNO₂. HNO₂ is a weak acid (the K_a is about 7.2x10^-4), so NO₂- would undergo hydrolysis and the pH would be greater than 7. Since the K_a is greater than the K_a for HC₂H₃O₂, this solution would be more weakly basic than the NaC₂H₃O₂ solution.

General Chemistry Online! Which has the highest pH: 0.1 M NaC_2_H_3_O_2_, 0.1 M NaCl, or 0.1 M NaNO_3_?

Which has the highest pH: 0.1 M NaC2H3O2, 0.1 M NaCl, or 0.1 M NaNO3?