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JEE 2021 | Solution
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Question 1
Calculate the molarity of solution of CaCl2, if an chemical analysis it is found that 200 mL of CaCl2 contains 3.01 × 1022 Cl– ions.
Question 2
At 90° C, the vapour pressure of toluene is 400 Torr and that of o-xylene is 150 Torr. What is the composition of the liquid mixture that boils at 90°C when the pressure is 0.50 atm? What is the composition of the vapour produced?
Question 3
If the angle of incidence of X-ray of wavelength 3Å which produces a second order diffracted beam from the (100) planes in a simple cubic lattice with interlayer spacing a=6Å is 30
, the angle of incidence that produces a first-order diffracted beam from the (200) planes is
, the angle of incidence that produces a first-order diffracted beam from the (200) planes is Question 4
Which of the following liquid pairs shows a positive deviation from Raoult’s law?
Question 5
The variation of solubility of four different gases (G1, G2, etc.) in a given solvent with pressure at a constant temperature is shown in the plot.
The gas with the highest value of Henry’s Law constant is
The gas with the highest value of Henry’s Law constant is
Question 6
Vapor pressure of1,1-Dichloroethane (CH3CHCl2) is 224 torr at 25.0 °C; at the same temperature, 1,1-dichlorotetrafluoroethane (CF3CCl2F) has a vapor pressure of 79 torr. Calculate the mass of 1,1-dichloroethane required to mix with 240.0 g of 1,1-dichlorotetrafluoroethane to give a solution with vapor pressure 155 torr at 25 °C. Assume ideal behavior.
Question 7
The vapour pressure of two liquids P and Q are 80 and 60 torr respectively. The total vapour pressure of solution obtained by mixing 3 mol of P and 2 mol of Q would be
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Mar 8JEE & BITSAT
