A 0.372-g sample of NaOH(s)is added to enough water to make 250.0 mL of solution.The pH of this solution is:

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Quizplus · Accepted Answer

The molarity of NaOH is calculated by dividing the moles of NaOH by the volume of the solution in liters. The moles of NaOH are found by dividing the mass by the molar mass (0.372 g / 40.00 g/mol = 0.0093 mol). The molarity is 0.0093 mol / 0.250 L = 0.0372 M. Since NaOH is a strong base, it fully dissociates, so [OH-] = 0.0372 M. The pOH is -log(0.0372) = 1.429. The pH is 14 - pOH = 12.571.

A 0372-G Sample of NaOH(s)is Added to Enough Water to Make