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12 February, 12:23

What mass of NaOH us required to prepare 2.5dm of 1.5 M NaOH solution

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  1. 12 February, 12:44
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    Mass = 150 g

    Explanation:

    Given dа ta:

    Mass of NaOH = ?

    Volume of solution = 2.5 dm³ or 2.5 L

    Molarity of solution = 1.5 M

    Solution:

    Formula:

    Molarity = number of moles / volume in L

    Number of moles = 1.5 M * 2.5 L

    Number of moles = 3.75 mol

    Mass of sodium hydroxide:

    Mass = number of moles * molar mass

    Mass = 3.75 mol * 40 g/mol

    Mass = 150 g
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