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Why does not molality of the solution ca...

Why does not molality of the solution cange with temperature ?

Text Solution

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It takes into account only the mass of the solute as well of the solvent. Both of them do not change with change in temperature.
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Knowledge Check

  • The molality of a solution is

    A
    Number of moles of solute per 1000 ml of the solvent
    B
    Number of moles of solute per 1000 gm of the solvent
    C
    Number of moles of solute per 100 ml of the solution
    D
    Number of gram equivalents of solute per 1000 ml of the solution

  • Assertion: The molality of the solution does not change with change in temperature. Reason: The molality is expressed in units of moles per 1000g of solvent.

    A
    Both A and R are true and R is the correct explanation of A
    B
    Both A and R are true but R is not a correct explanation of A
    C
    A is true but R is false
    D
    A is false but R is true

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    Molarity of a solution changes with temperature but molality does not.

    A very small amount of a nonvolatile solute (that does not dissociate) is dissolved in 56.8cm^(3) of benzene (density 0.889gcm^(-3) ). At room temperature, vapour pressure of this solution is 98.88 mmHg while that of benzene is 100mmHg. Find the molality of this solution. If the freezing temperature of this solution is 0.73 degree lower than that of benzene what is the value of molal freezing point depression constant of benzene ?

    A very small amount of a non-volatile solute (that does not dissociate) is dissolved in 56.8 cm^(3) of benzene (density 0.889 g cm^(3)) . At room temperature, vapour pressure of this solution is 98.88 mm Hg while that of benzene is 100 mm Hg . Find the molality of this solution. If the freezing temperature of this solution is 0.73 degree lower than that of benzene, what is the value of molal the freezing point depression constant of benzene?

    Differentiate between molarity and molality of a solution. What is the effect of temperature in molarity and molality of a solution ?

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