Elevation in Boiling Point
Elevation in Boiling Point: Overview
This topic covers concepts, such as, Elevation of Boiling Point, Molal Boiling Point Elevation Constant, Molal Boiling Point Elevation Constant Using Molar Heat of Vapourisation & Molar Heat of Vapourisation etc.
Important Questions on Elevation in Boiling Point
A solution containing of a substance in of diethyl ether boils at whereas, pure ether boils at
The molecular mass of the solute would be: (for ether)

The boiling point elevation of acetic acid in benzene is . From this data, find the molar mass of acetic acid. (For benzene, )

The energy is required to vaporize a liquid, molar enthalpy of vaporization has a _____ sign.

The energy is _____ by the system to get the molecules into the gas state.

What is the unit of the molar heat of vaporization?

Express the formula for the molar heat of vaporization.

Discuss the molar heat of vaporization.

of glucose dissolved in of water is heated to boiling. The boiling point (in ) measured at pressure is closest to [Ebullioscopic constant, for water is . Consider absolute zero to be ]

The molal boiling point elevation constant depends upon

A solution of of benzoic-acid in of benzene shows a boiling point elevation of If the solute is dimerized to an extent of the boiling point of pure benzene will be_________ (Molar enthalpy of vaporization of benzene )

The elevation in boiling point of a solution of of a binary electrolyte (of molecular mass ) in of water is . Then the value of for water is

Molal elevation constant is the elevation in boiling point produced by

The boiling point (in ) of molal aqueous solution of at bar is closest to: [Given: Ebullioscopic (molal boiling point elevation) constant of water,

The molal elevation constant for water is . What will be the boiling point of molar sucrose solution at pressure? (Assume that the boiling point of pure water is )

Which of the following are correct for the elevation of boiling point ():

The boiling point of aqueous solutions of and should follows the order.

Latent heat of vaporization for a liquid solvent is Let the boiling point be Find the value of of the solvent in .

A protein has been isolated as sodium salt with their molecular formula NaxP (this notation means that xNa+ ions are associated with a negatively charged protein P-x). A solution of this salt was prepared by dissolving 0.25g of this sodium salt of protein in 10g of water and ebullioscopic analysis revealed that solution boils at temperature 6.78 x 10-3 oC higher than the normal boiling point of pure water. Kb of water is 0.52 k kg mol-1. Also elemental analysis revealed that the salt contain 1% sodium metal by weight.
Determine molecular weight of acidic form of protein :

For next two question please follow the same
A protein has been isolated as sodium salt with their molecular formula NaxP (this notation means that xNa+ ions are associated with a negatively charged protein P-x). A solution of this salt was prepared by dissolving 0.25g of this sodium salt of protein in 10g of water and ebullioscopic analysis revealed that solution boils at temperature 6.78 x 10-3 oC higher than the normal boiling point of pure water. Kb of water is 0.52 k kg mol-1. Also elemental analysis revealed that the salt contain 1% sodium metal by weight.
Determine molecular weight of sodium salt of protein.

The molal elevation constant is the ratio of the elevation in boiling point to:
