Multiple Choice
What is the pH of a buffer that results when 0.50 mole of H3PO4 is mixed with 0.25 mole of NaOH and diluted with water to 1.00 L? (The acid dissociation constants of phosphoric acid are Ka1 = 7.5 × 10-3,Ka2 = 6.2 × 10-8,and Ka3 = 3.6 × 10-13)
A) 1.82
B) 2.12
C) 6.91
D) 7.21
E) 12.44
Correct Answer:
Verified
Correct Answer:
Verified
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