An aqueous solution contains 0.500 M NaOH at 25.0 °C.The pH of the solution is ________.

Name: An aqueous solution contains 0.500 M NaOH at 25.0 °C.The pH of the solution is ________.
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Question

Quizplus · Accepted Answer

NaOH is a strong base and completely dissociates in water. The hydroxide ion concentration for a 0.500 M NaOH solution is also 0.500 M. The pH of this solution can be found using the equation:
pH = 14 - pOH
pOH = -log[OH-]
pOH = -log(0.500) = 0.301
pH = 14 - 0.301 = 13.70. Therefore, the correct answer is B.

An Aqueous Solution Contains 0