Van't Hoff's Factor

Select the correct statements:

Acetic acid undergoes dimerisation in benzene, the van't Hoff factor $\left(\mathrm{i}\right)$ is related to degree of association of acid $\left(\mathrm{\alpha }\right)$, as

Which of the following aqueous solutions have higher freezing point?

If the degree of dissociation of aqueous solution of weak monobasic acid is determined to be $0.3$, then the observed freezing point will be _____ $\%$ higher than the expected/theoretical freezing point. (Nearest integer).

The degree of dissociation of monobasic acid is $0.3$, By what percent is the observed depression in freezing point greater than the calculated depression in freezing point?

How many of the following have same Relative lowering vapour pressure?

(A) $1\mathrm{M} \mathrm{NaCl}$ 

(B) $1.5 \mathrm{M} {\mathrm{AlCl}}_3$

(C) $1\mathrm{M} \mathrm{urea}$

(D) $2\mathrm{M} {\mathrm{Na}}_2{\mathrm{SO}}_4$

Which has highest freezing point :

Vant hoff factor is dependent or independent of Concentration?

The Van't Hoff's factor$\left(\mathrm{i}\right)$ for a $0.2$ molal aqueous solution of urea is _____

$72.5 \mathrm{g}$of phenol dissolved in $1\mathrm{kg}$ solvent $\left({\mathrm{k}}_{\mathrm{f}}=14\right)$. If depression in freezing point is $7\mathrm{K}$. Find the %phenol that dimerised.

Round off your answer to the nearest integer.

The freezing point of $0.2 \mathrm{M} \mathrm{HA}$ acid is $-0.558°\mathrm{C}$. The dissociation constant of acid is

Given: ${\mathrm{k}}_{\mathrm{f}}=1.86 °\mathrm{C}/\mathrm{m}$

What is degree of association ?

Van't Hoff factor in case of $50\%$ dissociation of ${\mathrm{PCl}}_5$ is :

A $0.01$ molal solution of ammonia freezes at $-0.{02}^{\circ }\mathrm{C}$. Calculate the Van'tHoff factor, $\left(\mathrm{i}\right)$ and the percentage dissociation of ammonia in water. 

${\mathrm{K}}_{\mathrm{f}\left({\mathrm{H}}_2\mathrm{O}\right)}=1.86 \mathrm{deg} {\mathrm{molal}}^{-1}$

The osmotic pressure of $0.5\mathrm{M}$ aqueous solution of ${\mathrm{CH}}_3\mathrm{COOH}$ having $\mathrm{pH} = 2$ at temperature $\mathrm{T}$ is _____

$\mathrm{Out} \mathrm{of} \mathrm{the} \mathrm{following} \mathrm{three} \mathrm{solutions}, \mathrm{which} \mathrm{has} \mathrm{the} \mathrm{highest} \mathrm{freezing} \mathrm{point} \mathrm{and} \mathrm{why} ? \left(\mathrm{i}\right) 0.1 \mathrm{M} \mathrm{Urea} \left(\mathrm{ii}\right) 0.1 \mathrm{M} \mathrm{Barium} \mathrm{phosphate} \left(\mathrm{iii}\right) 0.1 \mathrm{M} \mathrm{Sodium} \mathrm{sulphate}$

$\mathrm{Out} \mathrm{of} \mathrm{the} \mathrm{following} \mathrm{three} \mathrm{solutions}, \mathrm{which} \mathrm{has} \mathrm{the} \mathrm{Lowest} \mathrm{boiling} \mathrm{point} \mathrm{and} \mathrm{why} ? \left(\mathrm{i}\right) 1 \mathrm{M} \mathrm{Glucose} \left(\mathrm{ii}\right) 1 \mathrm{M} \mathrm{Potassium} \mathrm{chloride} \left(\mathrm{iii}\right) 1 \mathrm{M} \mathrm{Aluminium} \mathrm{nitrate}$

$\mathrm{Out} \mathrm{of} \mathrm{the} \mathrm{following} \mathrm{three} \mathrm{solutions}, \mathrm{which} \mathrm{has} \mathrm{the} \mathrm{lowest} \mathrm{freezing} \mathrm{point} \mathrm{and} \mathrm{why} ? \left(\mathrm{i}\right) 0.1 \mathrm{M} \mathrm{Urea} \left(\mathrm{ii}\right) 0.1 \mathrm{M} \mathrm{Barium} \mathrm{phosphate} \left(\mathrm{iii}\right) 0.1 \mathrm{M} \mathrm{Sodium} \mathrm{sulphate}$

$\mathrm{Out} \mathrm{of} \mathrm{the} \mathrm{following} \mathrm{three} \mathrm{solutions}, \mathrm{which} \mathrm{has} \mathrm{the} \mathrm{Lowest} \mathrm{boiling} \mathrm{point} \mathrm{and} \mathrm{why} ? \left(\mathrm{i}\right) 1 \mathrm{M} \mathrm{Glucose} \left(\mathrm{ii}\right) 1 \mathrm{M} \mathrm{Potassium} \mathrm{chloride} \left(\mathrm{iii}\right) 1 \mathrm{M} \mathrm{Aluminium} \mathrm{nitrate}$

Calculate the freezing point of a solution containing $8.1 \mathrm{g} \mathrm{of} \mathrm{HBr} \mathrm{in} 100 \mathrm{g}$ of water, assuming the acid to be $90\%$ ionized. [Given: Molar mass of Br$= 80 \mathrm{g}/\mathrm{mol}, {\mathrm{K}}_{\mathrm{f} }\mathrm{water} = 1.86 \mathrm{K} \mathrm{kg}/\mathrm{mol}]$