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Enthalpy of Solution

7. MX2 dissoc...

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7. MX2 dissociates into M2+ and X ions in an aqueous solution, with a degree of dissociation (a) of 0.5. The ratio of the observed depression of freezing point of the aqueous solution to the value of the depression of freezing point in the absence of ionic dissociation is

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M X_{2}

dissociates into

M^{2 +}

X^{-}

ions in an aqueous solution, having a degree of dissociation

(α)

of 0.5. The ratio of the observed depression in freezing point of the aqueous solution to the value of the depression in freezing point in the absence of ionic dissociation will be

M X_{2}

dissociates into

M^{2 +}

X^{-}

ions in an aqueous solution with a degree of dissociation of

α

0.5

. The ratio of the observed depression of freezing point of the aqueous solution to the value of the depression of freezing point in the absence of ionic dissociation is:

Q. Of the folowing

0.10 m

aqueous solutions, which one will exhibit the largest freezing point depression?
(Considering comple dissociation wherever applicable)

Q. The depression in freezing point for

0.01 m

aqueous solution of

K_{x} [F e {(C N)}_{6}]

0.0744 K

. The motal depression constant for solvent is

1.86 K

k g

{m o l}^{- 1}

. If the solute undergoes complete dissociation, what is the correct molecular formula for the solute?

Q. The freezing point depression of a 0.10 m solution of HF(aq) solution is

- {0.201}^{\circ} C

. Calculate the percent dissociation of HF(aq).

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