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2. The Ka of nitrous acid is 4.5 x 10-4. In a titration 50.0 mL of...

2. The Ka of nitrous acid is 4.5 x 10-4. In a titration 50.0 mL of a 1.00 M solution is titrated with 0.750 M NaOH. Calculate the pH of the solution:

a. Before the titration begins.

b. When sufficient NaOH has been added to neutralize half of the nitrous acid originally present.

c. At the equivalence point.

d. When 0.05 mL of NaOH less than that required to reach the equivalence point has been added.

e. When 0.05 mL of NaOH more than that required to reach the equivalence point has been added.

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