Answer
$[H_3O^+] = 1.778 \times 10^{- 4}M$
It is an acidic solution.
Work Step by Step
$[H_3O^+] = 10^{-pH}$
$[H_3O^+] = 10^{- 3.75}$
$[H_3O^+] = 1.778 \times 10^{- 4}M$
- Solutions with pH < 7 are considered acidic.
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