Correct Answer: Option B

Explanation

P^H = - Log[ H⁺ ]

P^H + P^OH =14

P^OH = 14 - 3.8

P^OH = 10.2

P^OH = - Log[ OH^- ]

10.2 = - Log[ OH^- ]

10^-10.2 = [ OH^- ]

[ OH^- ] = 6.3 x 10^-11

There is an explanation video available below.

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