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The mass of a non – volatile solute (molar mass 80 g mol-1) should be dissolved in 92g of toluene to reduce its vapour pressure to 90% ______.

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प्रश्न

The mass of a non – volatile solute (molar mass 80 g mol-1) should be dissolved in 92g of toluene to reduce its vapour pressure to 90% ______.

विकल्प

  • 10 g

  • 20 g

  • 9.2 g

  • 8 g

MCQ
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उत्तर

The mass of a non – volatile solute (molar mass 80 g mol-1) should be dissolved in 92g of toluene to reduce its vapour pressure to 90% 8 g.

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अध्याय 9: Solutions - Evaluation [पृष्ठ ६३]

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सामाचीर कलवी Chemistry - Volume 1 and 2 [English] Class 11 TN Board
अध्याय 9 Solutions
Evaluation | Q I. 20. | पृष्ठ ६३

संबंधित प्रश्न

What role does the molecular interaction play in a solution of alcohol and water?


Fill in the blanks by choosing the appropriate word/words from those given in the brackets: 

Ideal solutions obey ………. law and they …………. form azeotropic mixtures.

(Henry’s, aldol condensation, absence, do not, ohm, Raoult’s, increases, common ion effect, easily, three, solubility product, ohm-1, two, four, ohm-1, cm2, Cannizzaro, ohm-1 cm-1, zero, decreases, presence)


The KH for the solution of oxygen dissolved in water is 4 × 104 atm at a given temperature. If the partial pressure of oxygen in air is 0.4 atm, the mole fraction of oxygen in solution is ______.


Two liquids X and Y on mixing gives a warm solution. The solution is ______.


Assertion: An ideal solution obeys Raoults Law.

Reason: In an ideal solution, solvent – solvent as well as solute – solute interactions are similar to solute-solvent interactions.


Which of the following is an example of a solid solution?


Intermolecular forces between two benzene molecules are nearly of same strength as those between two toluene molecules. For a mixture of benzene and toluene, which of the following are not true?

(i) ∆mix H = zero

(ii) ∆mix V = zero

(iii) These will form minimum boiling azeotrope.

(iv) These will not form ideal solution.


Upon increase in pressure for dissociation N2O4 into NO2, equilibrium shift towards


Assertion (A): The enthalpy of mixing Δmix H is equal to zero for an ideal solution.

Reason (R): For an ideal solution the interaction between solute and solvent molecules is stronger than the interactions between solute-solute or solvent-solvent molecules.


Suggest the most important type of intermolecular attractive interaction in the following pair.

n-hexane and n-octane


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