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प्रश्न
Choose the most correct option.
Vapour pressure of a solution is _______.
विकल्प
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
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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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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 ______.
State Raoult’s law for the solutions of non-volatile solutes in volatile solvents.
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?
What is enthalpy change and volume change of mixing of two components forming an ideal solution?
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.
Explain with reasons and diagrams, the positive and negative deviations from Raoult’s law shown by nonideal solutions.
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.
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, ______.
What are ideal and non-ideal solutions?
The vapour pressures of two liquids A and B are 80 mmHg and 60 mm Hg respectively at 25°C. What is the vapour pressure of the solution obtained by mixing 3 moles of A and 2 moles of B?
State Raoult’s law for solutions containing volatile solutes.
Write the relationship between mole fraction of solvent and vapour pressure of solution.
The solutions that obey Raoult's law over entire range of concentrations are ______.
