What is the [HPO4-2] of a solution labeled "0.10 M Phosphoric Acid"? [Ka1 = 7.1 × 10-3; Ka2 = 6.3 × 10-8; Ka3 = 4.2 × 10-13]
A) 4.2 × 10-13 M
B) 6.3 × 10-8 M
C) 7.1 × 10-3 M
D) 1.6 × 10-9 M
E) 1.6 × 10-16 M
Correct Answer:
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