What is the pH of a 0.015 M NaOH solution?
A)0.015
B)1.82
C)7.00
D)12.18
E)−1.82

Question

Quizplus · Accepted Answer

NaOH is a strong base that completely dissociates in water, producing hydroxide ions (OH-). The concentration of OH- ions in the solution will determine the pH. Using the formula: pH = -log([OH-]), we can calculate the pH of the solution as pH = -log(0.015) = 1.82. However, this value represents the pOH, and to find the pH, we need to subtract it from 14: pH = 14 - pOH = 14 - 1.82 = 12.18. Therefore, the answer is D, 12.18.

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