Multiple Choice
Consider the titration of 200.0 mL of a 0.100 M solution of the weak acid H2A with 0.200 M NaOH. The first equivalence point is reached after 100.0 mL of 0.200 M NaOH has been added, and the pH is 6.27. The pH after 65.0 mL of 0.200 M NaOH has been added, the pH is 4.95.Calculate the pH of the original acid (no NaOH added) .
A) 3.19
B) 2.84
C) 2.55
D) 4.68
E) none of these
Correct Answer:
Verified
Correct Answer:
Verified
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