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A Titration of 200 ×\times 10-5,Ka2 = 3 ×\times 10-9

Question 23

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A titration of 200.0 mL of 1.00 M H2A was done with 1.38 M NaOH.For the diprotic acid H2A,Ka1 = 2.5 ×\times 10-5,Ka2 = 3.1 ×\times 10-9.Calculate the pH after 100.0 mL of 1.38 M NaOH have been added.


A) 9.05
B) 8.86
C) 5.14
D) 9.90
E) 4.95

Correct Answer:

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