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Figure explains elevation in boiling poi...

Figure explains elevation in boiling point when a non-volatile solute is added to a solvent. Variation of vapour pressure with temperaure and elevation in boiling point is marked.

Given that `DeltaT_(b)` is the elevation in boiling point of the solvent in a solution of molarity m then `lim_(m rarr 0) ((Delta T_(b))/(m))` is equal to:

A

`K_(b)` (molal elevation constant)

B

`L_(v)` (latent heat of vaporisation)

C

`DeltaS` (entropy change)

D

x (mole fraction of solute)

Text Solution

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The correct Answer is:
A
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Knowledge Check

  • Consider following figure and answer the questions at the end of it. Figure explains elevation in boiling point when a non-volatile solute is added to a solvent. Variation of vapour pressure with temperature and showing elevation in boiling point. Given that DeltaT_(b) is the elevation in boiling point of the solvent in a solution of molality 'm' then underset(m rarr 0)(Lt) ((Detal T_(b))/(m)) is equal to

    A
    `K_(b)` (molal elevation constant)
    B
    `L_(v)` (latent heat of vaporization)
    C
    `Delta S` (entropy change)
    D
    x (mole fraction of solute)

  • Consider following figure and answer the questions at the end of it. Figure explains elevation in boiling point when a non-volatile solute is added to a solvent. Variation of vapour pressure with temperature and showing elevation in boiling point. Given that DeltaT_(b) is the elevation in boiling point of the solvent in a solution of molality m then underset(mto0)(Lt)((DeltaT_(b))/(m)) is equal to

    A
    `K_(b)` (molal elevation constant)
    B
    `L_(y)` (latent heat of vaporization)
    C
    `DeltaS` (entropy change)
    D
    x (mole fraction of solute)

  • Given that Delta T_(f) is the depression in freezing point of the solvent in a solution of a non-volatile solute of molality m, the quantity lim_(m rarr 0)((Delta T_(f))/(m)) is equal to

    A
    Zero
    B
    One
    C
    Three
    D
    None of the above

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