The unit that relates concentration of solution with its vapour pressure is: 

A beaker contains a solution of substance 'A' . Precipitation of substance ‘A’ takes place when small amount of 'A' is added to the solution. The solution is -

Colligative properties depend on -

A solution that has the highest boiling point among the following is -

An unripe mango placed in a concentrated salt solution to prepare pickle shrivels because -

At a given temperature, osmotic pressure of a concentrated solution of a substance is-

Value of Henry's constant K_H is-

The value of Henry's constant, K_H is ......... .

Intermolecular forces between two benzene molecules are nearly the same strength as those between two toluene molecules.

Incorrect statement among the following for a mixture of benzene and toluene is -

a. ${∆}_{\mathrm{mix}}$H= zero

b. Δ_mixV = Zero

c. These will form a minimum boiling azeotrope

d. These will not form an ideal solution

For a binary ideal liquid solution, the curve that represents the variation in total vapor pressure versus composition of the solution is -

a.  

b.   

c.  

d.   

The correct option is-

3. 22.6 kg mol-1

If 8g of a non-electrolyte solute is dissolved in 114 g of n-octane to reduce its vapour pressure to 80%, the molar mass (in g mol^–1) of the solute is -

[Molar mass of n-octane is 114 g mol^–1 ]

Isotonic solutions have same-

The molarity of H₂SO₄ solution that has a density 1.84 g/cc at $35°\mathrm{C}$ and contains 98% H₂SO₄ by weight is-

Vapour pressure of chloroform $\left(CHC{l}_3\right)$ and dichloromethane $\left(C{H}_{2}C{l}_2\right)$ at $25°C$ are 200 mmHg and 41.5 mmHg respectively. Vapour pressure of the solution obtained by mixing 25.5 g of $\left(CHC{l}_3\right)$ and 40 g of $\left(C{H}_{2}C{l}_2\right)$ at the same temperature will be: (Molecular mass of $\left(CHC{l}_3\right)$ = 119.5 u and molecular mass of $\left(C{H}_{2}C{l}_2\right)$ = 85 u)

A 0.1 molal aqueous solution of a weak acid (HA) is 30% ionized. If K_f for water is 1.86°C/m, the freezing point of the solution will be -

200 mL of an aqueous solution of a protein contains it's 1.26 g. The Osmotic pressure of this solution at 300 K is found to be 2.57 × 10^–3 bar.The molar mass of protein will be

(R = 0.083 L bar mol^–1 K^–1):

Henry’s law constant for the molality of methane in benzene at 298 K is 4.27 × 105 mm Hg. The solubility of methane in benzene at 298 K under 760 mm Hg is -

The addition of water vapours does not change the density of -

1% (w/w)solution of a compound is isotonic with 5% (w/w)sucrose (sugar) solution. Then molecular wt. of compound will be :

Mole fraction of solute is 0.2 in solution then lowering in V.P (∆P) = 10. If lowering in V.P.( ∆P) = 20 then mole fraction of solvent will be in solution :

Camphor is often used in molecular mass determination because :-

From the colligative properties of solution which one is the best method for the determination of molecular weight of proteins & polymers :

A solution contains non volatile solute of molecular mass M₂. The molecular mass of solute in terms of osmotic pressure is  : -
 

Note:

m₂ → mass of solute

V → Volume of solution

\(\Pi\) → Osmotic pressure

The ideal solution indicates -

Beans get cooked earlier in a pressure cooker, because: -

If 22 g of benzene is dissolved in 122 g of carbon tetrachloride then the mass percentage of carbon tetrachloride (CCl₄) is-

The partial pressure of ethane over a solution containing 6.56 × 10^–2 g of ethane is 1 bar. If the solution contains 5.00 × 10^–2 g of ethane, the partial pressure of the gas will be -

The positive deviations from Raoult’s law mean the vapour pressure is -