Given the following information, determine which of these acids is the strongest. The Ka for boric acid is 7.3 × 10^–10, the pKa of acetic acid is 4.75, the Ka for lactic acid is 8.4 × 10^–4, and the pKa of phenol is 9.89.
Group of answer choices:
a) phenol
b) acetic acid
c) formic acid
d) lactic acid
