NEET Chemistry MCQ: NCERT Raoult's & Henry's Law | NEET.Guide Questions

Which statement BEST describes the relationship between Raoult's and Henry's Laws?

A

Henry's Law is applicable for all solutions, while Raoult's Law is only for ideal solutions.

B

Raoult's Law is a special case of Henry's Law where the Henry's law constant equals the vapor pressure of the pure component.

C

Henry's Law describes the behavior of the solute in a dilute solution, while Raoult's Law describes the behavior of the solvent.

D

Both laws are only applicable to solutions of non-volatile solutes.

Question Tags

📚 Subject:Chemistry

📑 Chapter:Solutions

🎯Topic:Henry'S Law, Raoult'S Law

🎓 Ncert Level:Understanding

🎯Difficulty :Hard

⚡ Time Required :1 mins

🔄Ncert Concepts :Raoult's Law, Henry's Law

Related Questions

Which of the following pairs of liquids is LEAST likely to form a maximum boiling azeotrope?

A

Water and Hydrochloric acid

B

Acetone and Chloroform

C

Nitric acid and Water

D

n-Hexane and n-Heptane

Question Tags

📚 Subject:Chemistry

📑 Chapter:Solutions

🎯Topic:Henry'S Law, Raoult'S Law

PYQ YEAR: 2019

🎓 Ncert Level:Analyzing

🎯Difficulty :Medium

⚡ Time Required :1 mins

🔄Ncert Concepts :Solutions, Azeotropes, Intermolecular Forces

Positive deviation is observed in case of

A

$HN{O_3} + {H_2}O$

B

$CHC{l_3} + {\left( {{C_2}{H_5}} \right)_2}O$

C

$C{H_3}COC{H_3} + {C_6}{H_5}N{H_2}$

D

${C_6}{H_6} + C{H_3}COC{H_3}$

Question Tags

📚 Subject:Chemistry

📑 Chapter:Solutions

🎯Topic:Henry'S Law, Raoult'S Law

🎓 Ncert Level:Application

🎯Difficulty :Easy

⚡ Time Required :2 mins

🔄Ncert Concepts :Raoult's Law, Intermolecular forces, Positive deviation from ideal behavior

The partial pressure of ethane over a saturated solution containing $6.56 imes {10^{ - 2}} g$ of ethane is 1 bar. If the solution contains $5.0 imes {10^{ - 2}}\;g$ of ethane, the partial pressure of ethane will be :

A

$0.762\;{\rm{ }}bar$

B

$1.762\;{\rm{ }}bar$

C

$0.1{\rm{ }}\;bar$

D

$0.2{\rm{ }}\;bar$

Question Tags

📚 Subject:Chemistry

📑 Chapter:Solutions

🎯Topic:Henry'S Law, Raoult'S Law

🎓 Ncert Level:Application

🎯Difficulty :Medium

⚡ Time Required :2 mins

🔄Ncert Concepts :Henry's Law, Partial Pressure, Solubility

Which of the following statements about the composition of the vapour over an ideal $1:1$ molar mixture of benzene and toluene is correct? Assume that the temperature is constant at ${25^{\rm{o}}}C$ . (Given vapour pressure data at ${25^{\rm{o}}}C$ , ${\rm{benzene}}\,{\rm{ = }}\,{\rm{12}}{\rm{.8}}\,{\rm{kPa,}}\,{\rm{toluene}}\,{\rm{ = }}\,{\rm{3}}{\rm{.85}}\,{\rm{kPa}}$ )

A

The vapour will contain a higher percentage of benzene.

B

The vapour will contain a higher percentage of toluene.

C

The vapour will contain equal amounts of benzene and toluene.

D

Not enough information is given to make a prediction.

Question Tags

📚 Subject:Chemistry

📑 Chapter:Solutions

🎯Topic:Henry'S Law, Raoult'S Law

🎓 Ncert Level:Application

🎯Difficulty :Easy

⚡ Time Required :2 mins

🔄Ncert Concepts :Vapor pressure, Raoult's Law, Partial pressure

A solution has a 1:4 mole ratio of pentane to hexane. The vapour pressure of the pure hydrocarbons at ${20^0}C$ are $400\,mm\,Hg$ for pentane and $120\,mm\,Hg$ for Hexane. The molefraction of pentane in the vapour phase would be

A

0.200

B

0.455

C

0.800

D

0.550

Question Tags

📚 Subject:Chemistry

📑 Chapter:Solutions

🎯Topic:Henry'S Law, Raoult'S Law

🎓 Ncert Level:Application

🎯Difficulty :Medium

⚡ Time Required :3 mins

🔄Ncert Concepts :Raoult's Law, Partial Pressure, Mole Fraction

${P_A}$ and ${P_B}$ are the vapour pressures of pure liquid components $A$ and $B$ respectively of an ideal binary solution. If ${X_A}$ represents the mole fraction of component $A$ , the total pressure of the solution will be

A

${P_A} + {X_A}\left( {{P_B} - {P_A}} \right)$

B

${P_A} + {X_A}\left( {{P_A} - {P_B}} \right)$

C

${P_B} + {X_A}\left( {{P_B} - {P_A}} \right)$

D

${P_B} + {X_A}\left( {{P_A} - {P_B}} \right)$

Question Tags

📚 Subject:Chemistry

📑 Chapter:Solutions

🎯Topic:Henry'S Law, Raoult'S Law

🎓 Ncert Level:Application

🎯Difficulty :Easy

⚡ Time Required :2 mins

🔄Ncert Concepts :Raoult's Law, mole fraction, partial pressure, total pressure

The vapour pressure of a solution is proportional to :

A

Mole fraction of solute

B

1/(mole fraction of solute)

C

Mole fraction of solvent

D

None of the above

Question Tags

📚 Subject:Chemistry

📑 Chapter:Solutions

🎯Topic:Henry'S Law, Raoult'S Law

🎓 Ncert Level:Remembering

🎯Difficulty :Easy

⚡ Time Required :1 mins

🔄Ncert Concepts :Raoult's Law, Vapour Pressure, Mole Fraction

On mixing $10\,ml$ of acetone with $40\,ml$ of chloroform, the total volume of the solution is

A

$< 50\,ml$

B

$> \,50\,ml$

C

$= 50\,ml$

D

None

Question Tags

📚 Subject:Chemistry

📑 Chapter:Solutions

🎯Topic:Henry'S Law, Raoult'S Law

🎓 Ncert Level:Understanding

🎯Difficulty :Medium

⚡ Time Required :2 mins

🔄Ncert Concepts :volume of mixing, intermolecular forces, non-ideal solutions

The vapour pressure of pure liquid is 1.2 atm. When a non-volatile substance B is mixed in A, then its vapour pressure becomes 0.6 atm. The mole fraction of B in the solution is

A

0.15

B

0.25

C

$0.50$

D

0.75

Question Tags

📚 Subject:Chemistry

📑 Chapter:Solutions

🎯Topic:Henry'S Law, Raoult'S Law

🎓 Ncert Level:Application

🎯Difficulty :Easy

⚡ Time Required :2 mins

🔄Ncert Concepts :Raoult's Law, Vapor Pressure Lowering, Mole Fraction

For an ideal solution of benzene and toluene, which of the following is true?

A

$\Delta H_{mix} > 0$ and $\Delta V_{mix} > 0$

B

$\Delta H_{mix} = 0$ and $\Delta V_{mix} = 0$

C

$\Delta H_{mix} < 0$ and $\Delta V_{mix} < 0$

D

$\Delta H_{mix} > 0$ and $\Delta V_{mix} < 0$

Question Tags

📚 Subject:Chemistry

📑 Chapter:Solutions

🎯Topic:Henry'S Law, Raoult'S Law

PYQ YEAR: 2019

🎓 Ncert Level:Understanding

🎯Difficulty :Easy

⚡ Time Required :1 mins

🔄Ncert Concepts :Solutions, Ideal Solutions, Raoult's Law, Enthalpy of Mixing, Volume Change on Mixing

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