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21 September, 17:19

Pure acetic acid has a density of 1.049g / (ml). Calculate the molarity of a solution of acetic acid made by dissolving 20.00 ml in enough water to make 250.0 ml of solution

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  1. 21 September, 17:34
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    Molarity = 1.4 M

    Explanation:

    Given dа ta:

    Density of acetic acid = 1.049 g/mL

    Volume of acetic acid = 20.0 mL

    Volume of solution = 250.0 mL (250/1000 = 0.25 L)

    Molarity = ?

    Solution:

    Mass of acetic acid = density * volume

    Mass of acetic acid = 1.049 g/mL * 20.0 mL

    Mass of acetic acid = 20.98 g

    Number of moles of acetic acid = mass / molar mass

    Number of moles of acetic acid = 20.98 g / 60.052 g/mol

    Number of moles of acetic acid = 0.35 mol

    Molarity = number of moles / volume in L

    Molarity = 0.35 mol / 0.25 L

    Molarity = 1.4 M
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