A 1.00 L solution contains 0.352 M HA (Ka = 4.66⋅10−64.66⋅10-6) and 0.758 M NaA. What...

Question:

A 1.00 L solution contains 0.352 M HA (Ka = 4.66⋅10−64.66⋅10-6) and 0.758 M NaA.

 What is the pH of this solution? What is the pH if 0.310 L of 0.138 M KOH is added to the solution be? What is the pH if 0.620 L of 0.138 M KOH is added to the solution be?

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