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Question

What is the pH of a solution with a concentration of 7.6 × 10⁻⁷ M H₃O⁺? (4 points)

A	0.993
B	6.12
C	7.88
D	8.34

Answer 1

Hi Billy,

To find pH from [H₃O⁺], use the equation pH = -log[H₃O⁺]. In this problem, [H₃O⁺] = 7.6 × 10⁻⁷ M, so

pH = -log(7.6 × 10⁻⁷) = 6.12, or answer choice B.