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4 August, 11:29

How does molarity and molality affect the concentration of a solution

explain.

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  1. 4 August, 12:07
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    Concentration of a solution can be expressed in terms of molarity and molality

    Molarity is the number of moles of solute in a liter of a solution.

    Molarity (M) = Moles of solute/Volume (litres) of solution

    Molality is the number of moles of solute in one kg of the solution

    Molality (m) = Moles of solute/Mass (kg) of solution

    Therefore if the volume or the mass of the solution is changed this would affect the concentration.

    In addition, volume is a quantity which depends on temperature. However, mass is independent of temperature. Therefore any changes in temperature, can also bring about a change in the molarity of the solution.
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