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21 March, 16:16

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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  1. 21 March, 16:46
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    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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