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

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प्रश्न

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

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उत्तर

The solutions in which solute-solvent intermolecular attractions are weaker than those between solute-solute molecules and solvent-solvent molecules, exhibit positive deviations.

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Vapour Pressure of Solutions of Liquids in Liquids
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अध्याय 2: Solutions - Very short answer questions

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एससीईआरटी महाराष्ट्र Chemistry [English] 12 Standard HSC
अध्याय 2 Solutions
Very short answer questions | Q 7

संबंधित प्रश्न

Answer the following in one or two sentences.

State Raoult’s law for a solution containing a nonvolatile solute.


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.


What is enthalpy change and volume change of mixing of two components forming an ideal solution?


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.


What are nonideal solutions?


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?


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?


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 of volatile components.


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


A mixture of two liquids A and B have vapour pressures 3.4 × 104 Mn-2 and 5.2 × 104 Nm-2. If the mole fraction of A is 0.85, find the vapour pressure of the solution.


The solutions that obey Raoult's law over entire range of concentrations are ______.


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