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Why is the magnitude of the boiling point elevation less than that of thefreezing point depression?O The chemical potential of the liquid is a much more steeply decreasing function oftemperature than gas.O The chemical potential of the vapor is higher at all times compared to condensedphases.O None of these.O The chemical potential of the vapor is a much more steeply decreasing function oftemperature than solid.None(Solved) - Why is the magnitude of the boiling point elevation less than that... (1 Answer) | Transtutors (4) Why is the magnitude of the boiling point elevation less than that of the freezing point depression? O The chemical potential of the liquid is a much more steeply decreasing function of temperature than gas. The chemical potential of the vapor is higher at all times compared to condensed phases. None of these. The chemical potential of the vapor is a much more steeply decreasing function of temperature than solid.

1 Approved Answer

Subhash P

5Ratings (11 Votes)

Solution: option (d) is correct. The chemical potential of vapor is...

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FAQs

Why is the magnitude of boiling point elevation? ›

The presence of solutes in a solution raises its boiling point, as it lowers the vapor pressure, requiring more heat to bring the solution's vapor pressure up to the pressure of the external atmosphere.

Is the magnitude of the boiling point elevation always the same as the freezing point depression? ›

The phenomenon of freezing-point depression is analogous to boiling point elevation. However, the magnitude of the freezing point depression is larger than the boiling point elevation for the same solvent and the same concentration of a solute.

How do you solve boiling point elevation problems? ›

What is the formula for calculating boiling point? The change in boiling is given by T=i*Kb*m where i is the van't Hoff factor, Kb is the molal boiling point elevation constant, and m is the molality of the solution.

What does the magnitude of elevation in boiling point and depression in freezing point of solution depend on? ›

Changes in the freezing point and boiling point of a solution depend primarily on the number of solute particles present rather than the kind of particles. Such properties of solutions are called colligative properties (from the Latin colligatus, meaning “bound together” as in a quantity).

Why is boiling point lower at higher altitude? ›

When compared to the pressure at sea level, the air pressure at high elevations is quite low. Cooking at a high elevation differs from cooking at sea level. As a result, water at high elevations boils at a lower temperature. It takes less energy to raise water to the boiling point when air pressure is lower.

What affects boiling point elevation? ›

Boiling point elevation is a colligative property of matter, i.e. it is dependent on the solute-to-solvent ratio but not on the solute's identity. This implies that the elevation in the boiling point of a solution depends on the amount of solute added to it.

What is the relation between elevation in boiling point? ›

Boiling Point Elevation Formula

The boiling point of a non-volatile solute containing solution can be expressed as follows: Boiling point of solution = pure solvent boiling point + elevation of the boiling point. The boiling point elevation (ΔTb) is proportional to the solute concentration in the solution.

What is the difference between elevation of boiling point and freezing point? ›

Boiling point elevation is the raising of a solvent's boiling point due to the addition of a solute. Similarly, freezing point depression is the lowering of a solvent's freezing point due to the addition of a solute. In fact, as the boiling point of a solvent increases, its freezing point decreases.

What is the boiling point elevation constant? ›

The proportionality constant, Kb, is called the molal boiling-point elevation constant. It is a constant that is equal to the change in the boiling point for a 1-molal solution of a nonvolatile molecular solute. For water, the value of Kb is 0.512oC/m.

What is the formula for the boiling point elevation? ›

The boiling point elevation formula is similar to freezing point depression. The equation is ΔTB=KB×m. ΔTB is the change in the boiling point. KB is the boiling point elevation constant.

Which solution has highest elevation in boiling point? ›

As we know, solution with higher no of ions shows higher elevation in boiling point so 0.1MFe2(SO4)3 shows maximum as it gives 5 ions in solution.

What is the boiling point elevation of water for a solution? ›

1, the molal boiling point elevation constant for water is 0.51°C/m. Thus a 1.00 m aqueous solution of a nonvolatile molecular solute such as glucose or sucrose will have an increase in boiling point of 0.51°C, to give a boiling point of 100.51°C at 1.00 atm.

What is the conclusion of boiling point elevation? ›

Conclusion. The phenomenon of boiling point elevation happens when the boiling point of a liquid is enhanced by the addition of another substance, resulting in a solution with a higher boiling point than the pure solvent. When a non-volatile solute is introduced to a pure solvent, the boiling point rises.

Why do solutions have higher boiling points? ›

A related property of solutions is that their boiling points are higher than the boiling point of the pure solvent. Because the presence of solute particles decreases the vapor pressure of the liquid solvent, a higher temperature is needed to reach the boiling point.

How to determine which solution has the highest boiling point? ›

A practical way to determine which compound from the same functional group has the highest boiling point is to look at their molecular weight. The heavier one will have the highest boiling point since they have similar intermolecular forces.

What is the reason for the elevation of the boiling point? ›

The vapor pressure of the resulting solution is lower than that of the pure solvent when a non-volatile solute is applied to the solvent. Therefore the solution must be supplied with a larger amount of heat for it to boil. The boiling point elevation is this rise in the solution's boiling point.

Why elevation in boiling point is directly proportional to molarity? ›

The elevation in boiling point is directly proportional to morality because: Elevation in boiling is an increase in the boring point of the substance when no volatile solute is added to a solvent. Due to this vapour pressure decreases. The formula for elevation in boiling point = ikbm.

How is the boiling point as a function of elevation? ›

At sea level, water boils at 100 °C (212 °F). For every 152.4-metre (500 ft) increase in elevation, water's boiling point is lowered by approximately 0.5 °C. At 2,438.4 metres (8,000 ft) in elevation, water boils at just 92 °C (198 °F). Boiling as a cooking method must be adjusted or alternatives applied.

Why is that the elevation in boiling point of water is not the same in the following solutions? ›

The correct Answer is:It is because number of particles in 0.1MNaCl solution are doulbel (twice) than that of 0.1M sugar solution.

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