An ammonia solution has a pH of 8.30. What is its [OH⁻]? A) 5.0 × 10⁻²³ M B) 2.0 × 10^{− 6} M C) 5.0 × 10⁻⁹ M D) 2.0 × 10⁸ M

Name: An ammonia solution has a pH of 8.30. What is its [OH − ]? A) 5.0 × 10 −23 M B) 2.0 × 10 − 6 M C) 5.0 × 10 −9 M D) 2.0 × 10 8 M
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Quizplus · Accepted Answer

The pH of 8.30 corresponds to a pOH of 5.70 (since pH + pOH = 14). The [OH⁻] is then calculated as 10^(-pOH) = 10^(-5.70) ≈ 2.0 × 10^(-6) M.

An Ammonia Solution Has a PH of 8