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9 May, 08:18

Calculate the molarity of a solution with 114.95 grams of sodium dissolved in 2 L of water.

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  1. 9 May, 08:27
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    The molarity of a solution is 2.5 M

    Explanation:

    Molarity is a concentration unit that describes how much of a solution is dissolved in solution.

    Molarity of a solution can found by using the formula,

    Molarity (M) = (moles of solute) / (Liters of Solution).

    Given, mass of Sodium = 114.95 grams.

    Volume of water = 2 L.

    Here, Sodium is solute as it is dissolved in water, which is the solvent.

    Moles of Sodium (solute) can be found by using the formula,

    Number of Moles = mass/Molecular weight.

    mass of Sodium = 114.95 grams.

    Molecular weight = 22.989 grams

    Number of Moles of Sodium (solute) = 114.95/22.989 = 5.

    Substituting the values in the formula, we get,

    M = 5/2 = 2.5 M
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