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27 January, 06:18

02 g of a sugar (molar mass = 360.4 g/mol) is dissolved in water to make 100.0 ml of solution. what is the molarity of this sweet solution

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  1. 27 January, 09:11
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    The question states that 18.02 g of the sugar is dissolved.

    Molarity of solution is defined as number of moles dissolved in 1 L.

    the molar mass of sugar - 360.4 g/mol

    The mass dissolved - 18.02 g

    Therefore number of moles of sugar - 18.02 g / 360.4 g/mol = 0.05 mol

    number of moles in 100.0 mL of solution = 0.05 mol

    therefore number of moles in 1000 mL = 0.05 mol / 100 x 1000 = 0.5 mol

    Molarity of solution = 0.5 mol/L
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