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महाराष्ट्र राज्य शिक्षण मंडळएचएससी विज्ञान (सामान्य) इयत्ता १२ वी

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 _______.

पर्याय

  • 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
रिकाम्या जागा भरा

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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पाठ 2: Solutions - Multiple choice questions

संबंधित प्रश्‍न

Choose the most correct option.

Pressure cooker reduces cooking time for food because _______.


Answer the following.

How vapour pressure lowering is related to a rise in the boiling point of solution?


The following solution/solvent has maximum vapour pressure _______.


Write the expression for relative lowering of vapour pressure.


The vapour pressure of a pure liquid is 0.043 bar at a certain temperature. When a nonvolatile solute is dissolved into it, the vapour pressure of the solution is found to be 0.041 bar. What is the 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?


Relative lowering of vapour pressure of a solution of non-volatile solute depend only on ____________.


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.


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


Relative lowering in vapour pressure depends on _______.


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 ______.


The vapour pressure of 100 g of water reduces from 17.53 mm to 17.22 mm when 17.10 g, of substance X is dissolved in it. Substance X can be ______.


State and explain Raoult's law for the solution of non-volatile solutes.


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