AIPMT 2012 Prelims | Solutions Question 26 | Chemistry

p_A and p_B are the vapour pressure of pure liquid components, A and B, respectively of an ideal binary solution. If x_A represents the mole fraction of component A, the total pressure of the solution will be

$${p_A} + {x_A}\left( {{p_B} - {p_A}} \right)$$

$${p_A} + {x_A}\left( {{p_A} - {p_B}} \right)$$

$${p_B} + {x_A}\left( {{p_B} - {p_A}} \right)$$

$${p_B} + {x_A}\left( {{p_A} - {p_B}} \right)$$

AIPMT 2011 Mains

MCQ (Single Correct Answer)

-1

200 mL of an aqueous solution of a protein contains its 1.26 g. The osmotic pressure of this solution at 300 K is found to be 2.57 $$ \times $$ 10^$$-$$3 bar. The molar mass of protein will be (R = 0.083 L bar mol^$$-$$1 K^$$-$$1)

51022 g mol^$$-$$1

122044 g mol^$$-$$1

31011 g mol^$$-$$1

61038 g mol^$$-$$1

AIPMT 2011 Mains

MCQ (Single Correct Answer)

-1

A 0.1 molal aqueous solution of a weak acid is 30% ionized. If K_f for water is 1.86^oC/m, the freezing point of the solution will be

$$-$$0.18^oC

$$-$$0.54^oC

$$-$$0.36^oC

$$-$$0.24^oC

AIPMT 2011 Prelims

MCQ (Single Correct Answer)

-1

The van't Hoff factor $$i$$ for a compound which undergoes dissociation in one solvent and association in other solvent is respectively

less than one and greater than one

less than one and less than one

greater than one and less than one

greater than one and greater than one.

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