## Chemistry and Chemical Reactivity (9th Edition)

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