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Moderate

Acidity Rank

APCHEM-GQVLJ7

Which of the following solutions is the MOST acidic?

A

$pH = 3.8$

B

$pOH = 3.2$

C

$[H_3O^+] = 9.8 × 10^{-5}$

D

$[OH^-] = 2.1 × 10^{-11}$