0 votes 0 votes A water sample has a pH of $9.25$. The concentration of hydroxyl ions in the water sample is $10^{-9.25}$ moles/L $10^{-4.75}$ mmoles/L $0.302$ mg/L $3.020$ mg/L Water and Waste Water Quality and Treatment gate2012-ce water-and-waste-water-quality-and-treatment environmental-engineering basics-of-water-quality-standards hydroxyl-ions + – Milicevic3306 asked Mar 25, 2018 • recategorized May 29, 2021 by Chandanachandu Milicevic3306 11.9k points answer See all 0 reply