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15 March, 10:07

How many grams of a solution that is 50% by weight NaOH

isrequired to make 1 Liter of 0.15M NaOH solution?

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Answers (1)
  1. 15 March, 10:14
    0
    12 g

    Explanation:

    We want to prepare 1 L of a 0.15 M NaOH solution. The moles of NaOH required are:

    0.15 mol/L * 1 L = 0.15 mol

    The molar mass of NaOH is 40.00 g/mol. The mass corresponding to 0.15 mol is:

    0.15 mol * (40.00 g/mol) = 6.0 g

    The starting solution is 50% by weight. The mass of solution that contains 6.0 g of NaOH is:

    6.0 g NaOH * (100 g solution/50 g NaOH) = 12 g solution
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