Assume that acid rain has lowered the pH of a particular lake to pH 5.0. What is the hydroxide ion concentration of this lake?

A) 1 × 10-9 mol of hydroxide ions per liter of lake water
B) 1 × 10-5 mol of hydroxide ions per liter of lake water
C) 5.0 M hydroxide ion
D) 5.0 × 10-5 mol of hydroxide ions per liter of lake water


Ans: A) 1 × 10-9 mol of hydroxide ions per liter of lake water

Biology & Microbiology

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