MEDIUM
JEE Main/Advance
IMPORTANT
Earn 100

1.22 g of a monobasic acid is mixed in 100 g of benzene. The boiling point of the solution increases by 0.13ºC with respect to pure benzene. Find the molecular mass of acid in benzene solvent (in uu). Report your answer after dividing it by 100 and round it off to nearest integer. (Kb of benzene = 2.6 K kg mol1 ).

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Important Questions on Solutions

HARD
JEE Main/Advance
IMPORTANT
1 g of a monobasic acid dissolved in 200 g of water lowers the freezing point by 0.186ºC. On the other hand, when 1 g of the same acid is dissolved in water to make the solution 200 mL, this solution requires 125 mL of 0.1 M NaOH for complete neutralization. Calculate % dissociation of acid.K=1.86K-kgmol
MEDIUM
JEE Main/Advance
IMPORTANT
At 27ºC, a 1.2% solution ( weight/volume) of glucose is isotonic with 4.0 g/litre of solution of solute X. Find the molar mass of X, if the molar mass of glucose is 180. (R = 0.082 L atm mol1 K1 , Molar mass of glucose = 180 g mole-1).
MEDIUM
JEE Main/Advance
IMPORTANT
We have 100 mL of 0.1 M KCl solution. To make it 0.2 M,
HARD
JEE Main/Advance
IMPORTANT
Which of the following concentration factors can be calculated if the mole fraction and density of an aqueous solution of HCl are known?
HARD
JEE Main/Advance
IMPORTANT
According to Henry’s law, the partial pressure of gas Pg' is directly proportional to the mole fraction of gas in the dissolved state, i.e., Pgas'= KH . Xgas where, KH is Henry’s constant. Which are correct?
EASY
JEE Main/Advance
IMPORTANT
Two liquids X and Y are perfectly immiscible. If X and Y have molecular masses in ratio 1 : 2, the total vapour pressure of a mixture of X and Y prepared in weight ratio 2 : 3 should be Px0=400 torr, Py0=200 torr):
HARD
JEE Main/Advance
IMPORTANT
Which is/are true about ideal solutions?
HARD
JEE Main/Advance
IMPORTANT
At 40°C, vapour pressure in torr of methanol and ethanol solution is P = 119x + 135 where x is the mole fraction of methanol. Hence,