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According to Raoult’s law, relative lowering of vapour pressure of solution containing dissolved nonvolatile solute _______. - Chemistry

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प्रश्न

According to Raoult’s law, relative lowering of vapour pressure of solution containing dissolved nonvolatile solute _______.

विकल्प

  • is equal to mole fraction of solvent

  • is equal to mole fraction of solute

  • does not depend on mole fraction of solute

  • is equal to molality of solution

MCQ
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उत्तर

According to Raoult’s law, relative lowering of vapour pressure of solution containing dissolved nonvolatile solute is equal to mole fraction of solute.

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Vapour Pressure Lowering
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अध्याय 2: Solutions - Multiple choice questions

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संबंधित प्रश्न

Choose the most correct option.

Pressure cooker reduces cooking time for food because _______.


Answer the following.

Why vapour pressure of a solvent is lowered by dissolving a nonvolatile solute into it?


The following solution/solvent has maximum vapour pressure _______.


Write the expression for relative lowering of vapour pressure.


For a very dilute solution, the osmotic pressure is given by π = n2RT/V where V is the volume in L containing n2 moles of nonvolatile solute. Establish the equation for molar mass of solute.


Give two points to explain why vapour pressure of solvent is lowered by dissolving nonvolatile solute into it.


Which of the following is NOT a colligative property?


The vapour pressure of solvent decreases by 1 O mm Hg, if mole fraction of non-volatile solute is 0.2. Calculate vapour pressure of solvent.


Which of the following is CORRECT for a solution containing non-volatile solute in it?


In an experiment, 1 g of a non-volatile solute was dissolved in 100 g of acetone (molar mass = 58 g mol−1) at 298 K. The vapour pressure of the solution was found to be 192.5 mm Hg. The molecular weight of the solute is (vapour pressure of acetone = 195 mm Hg) ____________ g mol−1.


Which of the following is CORRECT statement?


The vapour pressure of pure benzene (molar mass 78 g/mol) at a certain temperature is 640 mm Hg. A nonvolatile solute of mass 2.315 g is added to 40 g of benzene. The vapour pressure of the solution is 600 mm Hg. The molar mass of solute is ______.


At a constant volume, a quantity of an ideal gas has a pressure of 700 mm Hg at 300 K. At what pressure, the temperature will be halved?


According to Raoult's law, relative lowering of vapour pressure for a solution containing a nonvolatile solute is equal to ____________.


Relative lowering in vapour pressure of a solution containing non-volatile solute is the ratio of ____________.


Which of the following is INCORRECT expression in terms of vapour pressure of pure solvent `("P"_1^0)` and that of solution (P)?


Which of the following changes will cause increase in vapour pressure of 1 molal aqueous KI solution at same temperature?


What will be the molar mass of solute if vapour pressure of pure benzene is 450 mm Hg when 1.5 g of non-volatile solute is added to 30 g of benzene?
(Vapour pressure of solution= 400 mm Hg, Atomic mass C = 12, H = 1)


Relative lowering in vapour pressure depends on _______.


Identify the correct statement from the following:


38.4 g of unknown substance (molar mass 384 g mol-1) and 116 g of acetone is used to prepare a solution at 313 K. If vapour pressure of pure acetone (molar mass 58 g mol-1) is 0.842 atmosphere, what is the vapour pressure of solution?


12 g of a nonvolatile solute dissolved in 108 g of water produces the relative lowering of vapour pressure of 0.1. The molecular mass of the solute is ______.


The vapour pressure of a solvent A is 0.80 atm. When a non-volatile substance B is added to this solvent its vapour pressure drops to 0.6 atm. the mole fraction of B in the solution is ______.


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