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महाराष्ट्र राज्य शिक्षण मंडळएचएससी विज्ञान (सामान्य) इयत्ता १२ वी

Choose the most correct option. Vapour pressure of a solution is _______. - Chemistry

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प्रश्न

Choose the most correct option.

Vapour pressure of a solution is _______.

पर्याय

  • directly proportional to the mole fraction of the solute

  • inversely proportional to the mole fraction of the solute

  • inversely proportional to the mole fraction of the solvent

  • directly proportional to the mole fraction of the solvent

MCQ
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उत्तर

Vapour pressure of a solution is directly proportional to the mole fraction of the solvent.

For solutions containing non-volatile solutes, Raoult's law may be stated as at a given temperature, the vapour pressure of a solution containing a non-volatile solute is directly proportional to the mole fraction of the solvent.

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Vapour Pressure of Solutions of Liquids in Liquids
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पाठ 2: Solutions - Exercises [पृष्ठ ४५]

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बालभारती Chemistry [English] Standard 12 Maharashtra State Board
पाठ 2 Solutions
Exercises | Q 1.09 | पृष्ठ ४५

संबंधित प्रश्‍न

Choose the most correct option.

The vapour pressure of a solution containing 2 moles of a solute in 2 moles of water (vapour pressure of pure water = 24 mm Hg) is ______.


Answer the following.

Using Raoult’s law, how will you show that ΔP = `"P"_1^0 "x"_2`? Where, x2 is the mole fraction of solute in the solution and `"P"_1^0` vapour pressure of pure solvent.


The vapour pressure of water at 20°C is 17 mm Hg. What is the vapour pressure of solution containing 2.8 g urea in 50 g of water?


A mixture of benzene and toluene contains 30% by mass of toluene. At 30 °C, vapour pressure of pure toluene is 36.7 mm Hg and that of pure benzene is 118.2 mm Hg. Assuming that the two liquids form ideal solutions, calculate the total pressure and partial pressure of each constituent above the solution at 30 °C.


State Raoult’s law. 


What type of solutions exhibit positive deviations from Raoult’s law?


The vapour pressures of pure liquids A and B are 0.600 bar and 0.933 bar respectively, at a certain temperature.
What is the mole fraction of liquid B in the solution when the total vapour pressure of their mixture is 0.8 bar?


Distinguish between ideal and non-ideal solutions.


With the help of vapour pressure-temperature curves for solution and solvent, explain why boiling point of solvent is elevated when a nonvolatile solute is dissolved into it.


The vapour pressure of a pure solvent at a certain temperature is 0.0227 bar. What is the vapour pressure of a solution containing 6 g of solute (M = 60 g/mol) in 50 g of solvent?


Explain with reasons and diagrams, the positive and negative deviations from Raoult’s law shown by nonideal solutions.


Which of the following statements is INCORRECT?


Which of the following metals is refined by vapour phase refining in Mond process?


Which of the following is NOT nonideal solution?


9 gram anhydrous oxalic acid (mol. wt. = 90) was dissolved in 9.9 moles of water. If vapour pressure of pure water is pf the vapour pressure of solution is ______.


If 1 mole of ____________ is added to 1 dm3 of water, the boiling point of water will decrease.


5.0 g of sodium hydroxide (molar mass 40 g mol-1) is dissolved in little quantity of water and the solution is diluted upto 100 mL. What is the molarity of the resulting solution?


A solution of acetone in ethanol ______.


18 g of glucose (C6H12O6) is added to 178.2 g of water. The vapour pressure of water for this aqueous solution at l00°C is ______.


For an ideal binary liquid solution with `"p"_"A"^circ > "P"_"B"^circ`, which is a relation between XA (mole fraction of A in liquid phase) and YA (mole fraction of A in vapour phase) is correct, XB and YB are mole fractions of B in liquid and vapour phase respectively?


Total vapour pressure of a mixture of 1 mole A`("p"_"A"^circ = 150 " torr")` and 2 mole B`("p"_"B"^circ = 240 " torr")` is 200 mm. In this case, ______.


A solution having highest vapour pressure is ______.


Explain the variation of vapour pressures with mole fractions of binary solutions of two volatile liquids forming ideal solutions.


State Raoult’s law for solutions containing volatile solutes.


Write the relationship between mole fraction of solvent and vapour pressure of solution.


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