Solubility of non volatile salt is 4 g in 100 g water. if 2g,4g, 6g salt is added to 100g water in system X,Y,Z respectively then the order of vapour pressure would be?

Question

Answer

Vapour pressure is inversely proportional to solute conc. hence order will be x>y>z but the max amunnt of solute which is able to dissolve is only 4g/100g of water hence any solute con. above 4 g will have same solubility as 4 g hance there vapur pressure will also remain same hence x and y soln will have same vapur pressure.

Answer

Solubility of Non-Volatile Salt

Definition:

The solubility of a non-volatile salt is the amount of salt that can be dissolved in a given amount of solvent, usually water, at a specific temperature and pressure.

Given Data:

Solubility of non-volatile salt = 4 g in 100 g water

Amount of salt added to system X = 2 g

Amount of salt added to system Y = 4 g

Amount of salt added to system Z = 6 g

Explanation:

The addition of non-volatile solute to a solution decreases its vapor pressure. Therefore, the order of vapor pressure in the three systems can be determined based on the amount of solute added.

System X: 2 g of salt is added to 100 g of water. The concentration of the solution is 2/100 = 0.02. The vapor pressure of the solution will be lower than pure water but higher than the other two systems.

System Y: 4 g of salt is added to 100 g of water. The concentration of the solution is 4/100 = 0.04. The vapor pressure of the solution will be lower than system X but higher than system Z.

System Z: 6 g of salt is added to 100 g of water. The concentration of the solution is 6/100 = 0.06. The vapor pressure of the solution will be the lowest among the three systems.

Conclusion:

The order of vapor pressure from highest to lowest is System X > System Y > System Z.

Answer

No answer given is x>y=z

Answer

Vapour pressure is inversely proportional to solute concentration so x>y>z

Answer

X>y=z
bcz vp inversly proportional to solute concert.
and becomes cost after max. soublity is attained

Answer

Rinky is correct.

If you wanna simplify it further here's my explanation:

You must have heard of relative lowering of vapour pressure? i.e. as we add a non volatile solute in a volatile solvent (eg water) it's Vapour pressure decreases. So more is the amount of non-volatile salt lesser will be vapour pressure, but in the question it's solubility is just 4g for 100g of water which means no further lowering of vapour pressure occurs beyond 4g addition (as it will not dissolve in the water, rather get deposited) so vapour pressure of X would be highest as it lowered the vapour pressure the least, while Y and Z has the least value of the same. :)

Answer

Solution X is unsaturated so Vapour pressure will be more, solutions Y and Z are saturated so,

Vapour pressure of Y= Vapour pressure of Z.

2 gm of solute would be present in the form of solid system Z.

Hence the answer is: X>Y=Z

Similar NEET Doubts

On adding a non volatile solute to a solvent, the vapour pressure of solvent decreases and becomes z ×(vapour pressure of solvent) where z is ?

If the molality of the solution is0.70, then find relative lowering of the vapour pressure of an aqueous solution containing non-volatile solute?

Calculate the mass of a non volatile solute ( molecular mass = 40) ,which. should be dissolved in 114g octane to reduce it's vapour pressure to 80%?

Top Courses for NEETView all

Biology Class 11

Daily Test for NEET Preparation

NEET Mock Test Series 2025

Topic-wise MCQ Tests for NEET

Physics Class 11

Top Courses for NEET

Top Courses for NEET

Suggested Free Tests

Related Content

About NEET

NEET Preparation Material

How to Prepare for NEET Exam?

NCERT Based Study Material

NEET Mock Tests

Other Popular Exams

Company