350. mL of a NaOH solution was added to 500. mL of 2.50 M HNO2. The...

350. mL of a NaOH solution was added to 500. mL of 2.50 M HNO₂. The pH of the mixed solution was 1.75 units greater than that of the original acid solution. Calculate the molarity (in M) of the initial NaOH solution. (K_a of HNO₂ is 4.5x10^-4)

Expert Solution

a.

Initial pH of HNO2 is

so pH after NaOH addition = 1.4744 + 1.75 = 3.224

queen_honey_blossom answered 5 months ago

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