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24-04-2017
Chemistry

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What is the molarity of a solution made by dissolving 68.4g of NaOH in enough water to produce a 875 ml solution?

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06-05-2017

We first calculate for the number of moles of NaOH by dividing the given mass by the molar mass of NaOH which is equal to 40 g/mol. Solving,
moles of NaOH = (68.4 g/ 40 g/mol) = 1.71 moles NaOH
Then, we divide the calculate number of moles by the volume in liters.
molarity = (1.71 moles NaOH / 0.875 L solution)
molarity = 1.95 M

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