Chemistry · JEE

The vapour pressure of solutions and Raoult's Law - Ideal and non-ideal solutions, vapour pressure composition, plots for ideal and non-ideal solutions Mock Test for JEE

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Part of Solutions in JEE Main Chemistry.

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Q1ChemistryUnit 5: Solutions

Pick out the correct statements This question has multiple correct options

Q2ChemistryUnit 5: Solutions

The vapour prerssure of pure liquids

A

and B are 400 and

600 m m H g

respectively at

298 K .

On mixing the two liquids, the sum of their initial volumes is equal to the volume of the final mixture. The mole fraction of liquids B is 0.5 in the mixture. The vapour pressure of the final solution,the mole fraction of components

A

and

B

in vapour phase, respectively are:

Q3ChemistryUnit 5: Solutions

The incorrect statement is :

Q4ChemistryUnit 5: Solutions

Two liquids

X

and

Y

form an ideal solution at

300 K

, the vapour pressure of the solution containing 1 mole of

X

and 3 moles of

Y

is 550 mm Hg. At the same temperature, if 1 mole of

Y

is further added to this solution, the vapour pressure of the solution increases by 10 mm

H g .

Vapour pressure (in

\mathrm{mm}

Hg ) of

\boldsymbol{X}

and

\boldsymbol{Y}

in their pure states will be respectively:

Q5ChemistryUnit 5: Solutions

Negative deviation from Raoult's law is observed in which one of the following binary liquid mixtures?

Q6ChemistryUnit 5: Solutions

The vapour pressure of three liquids

P, Q

and

R,

of nearly equal molecular masses is shown as a function of temperature The correct statement is:

Q7ChemistryUnit 5: Solutions

Which of the following shows positive deviation from Raoult's law?

Q8ChemistryUnit 5: Solutions

The vapour density of oxygen is than air.

Q9ChemistryUnit 5: Solutions

Assertion The solutions which show large positive deviations from Raoult's law form maximum boiling azeotropes. Reason

95 \%

aqueous solution of ethanol is maximum boiling azeotrope

Q10ChemistryUnit 5: Solutions

Given below are few mixtures formed by mixing two components. Which of the following binary mixtures will have same composition in liquid and vapour phase? (i) Ethanol

+

Chloroform (ii) Nitric acid + Water (iii) Benzene + Toluene (iv) Ethyl chloride

+

Ethyl bromide

Q11ChemistryUnit 5: Solutions

For a dilute solution, Raoult's law states that:

Q12ChemistryUnit 5: Solutions

Mixture(s) showing positive deviation from Raoult's law at

35^{\circ} \mathrm{C}

is (are): This question has multiple correct options

Q13ChemistryUnit 5: Solutions

Which of the following forms an ideal solution? This question has multiple correct options

Q14ChemistryUnit 5: Solutions

The vapour pressure is least for?

Q15ChemistryUnit 5: Solutions

An aqueous solution of methanol in water has vapour pressure:

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