(B) Depression in freezing point is a colligative property,which depends on the molality of the solution.$\Delta T_{f} = K_{f} \times m$Where $\Delta

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(B) Depression in freezing point is a colligative property,which depends on the molality of the solution.$\Delta T_{f} = K_{f} \times m$Where $\Delta T_{f} = 1.0 \ K$,$K_{f} = 1.86 \ K \ kg \ mol^{-1}$,and $m = \frac{x / 78}{0.5 \ kg}$.Substituting the values: $1.0 = 1.86 \times \frac{x}{78 \times 0.5}$.$1.0 = 1.86 \times \frac{x}{39}$.$x = \frac{39}{1.86} \approx 20.96 \ g$.

Class 12 Chemistry Solutions Depression of freezing point of the solvent

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At $T$ $(K)$,$x \ g$ of a non-volatile solid (molar mass $78 \ g \ mol^{-1}$) when added to $0.5 \ kg$ water,lowered its freezing point by $1.0^{\circ} C$. What is $x$ (in $g$)? ($K_{f}$ of water at $T$ $(K)$ = $1.86 \ K \ kg \ mol^{-1}$)

AP EAMCET 2022 All AP EAMCET

A
$10.48$
B
$20.96$
C
$41.92$
D
$5.24$

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Depression of freezing point of the solvent

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Calculate the mass of ascorbic acid (Vitamin $C$,$C_{6}H_{8}O_{6}$) to be dissolved in $75 \ g$ of acetic acid to lower its melting point by $1.5 \ ^{\circ}C$. $K_{f} = 3.9 \ K \ kg \ mol^{-1}$.

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If an aqueous solution of glucose is allowed to freeze,then crystals of which substance will be separated out first?

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The freezing point of a $1\%$ aqueous solution of calcium nitrate will be:

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During the freezing of a solution at its freezing point,which of the following equilibria exists?

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The freezing point of a $0.05 \ molal$ solution of a non-electrolyte in water is $.......... \ ^oC$. $(K_f = 1.86 \ K \ kg \ mol^{-1})$

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At $T$ $(K)$,$x \ g$ of a non-volatile solid (molar mass $78 \ g \ mol^{-1}$) when added to $0.5 \ kg$ water,lowered its freezing point by $1.0^{\circ} C$. What is $x$ (in $g$)? ($K_{f}$ of water at $T$ $(K)$ = $1.86 \ K \ kg \ mol^{-1}$)

Similar Questions

Calculate the mass of ascorbic acid (Vitamin $C$,$C_{6}H_{8}O_{6}$) to be dissolved in $75 \ g$ of acetic acid to lower its melting point by $1.5 \ ^{\circ}C$. $K_{f} = 3.9 \ K \ kg \ mol^{-1}$.

If an aqueous solution of glucose is allowed to freeze,then crystals of which substance will be separated out first?

The freezing point of a $1\%$ aqueous solution of calcium nitrate will be:

During the freezing of a solution at its freezing point,which of the following equilibria exists?

The freezing point of a $0.05 \ molal$ solution of a non-electrolyte in water is $.......... \ ^oC$. $(K_f = 1.86 \ K \ kg \ mol^{-1})$

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