A buffer solution is prepared with 0.51 M of nitrous acid, HNO₂, and 0.16 M of sodium nitrite, NaNO₂. For HNO₂, Ka = 4.9 x 10‾⁴.

Question

A buffer solution is prepared with 0.51 M of nitrous acid, HNO₂, and 0.16 M of
sodium nitrite, NaNO₂. For HNO₂, Ka = 4.9 x 10‾⁴. What is the pH of this solution?

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