Which of the following acids has the lowest pH?
A) 0.1 M HBO, pKa = 2.43
B) 0.1 M HA, pKa = 4.55
C) 0.1 M HMO, pKa = 8.23
D) 0.1 M HST, pKa = 11.89
E) pure water
Correct Answer:
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