H3PO4 is a weak,triprotic acid.The acid dissociation constants are Ka1 = 7.1 × 10?3,Ka2 = 6.2 × 10?8,and Ka3 = 4.5 × 10?13.Calculate the equilibrium constant for the reaction below. H3PO4(aq) ? PO43?(aq) + 3H+(aq)
A) 2.0 × 10?22
B) 4.4 × 10?10
C) 2.0 × 10?8
D) 8.7 × 10?6
E) 7.1 × 10?3
Correct Answer:
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