Advertisements
Advertisements
Question
Define the following terms : Molal elevation constant (Kb)
Solution 1
Molal elevation constant (Kb):
When 1 molal solution is prepared, the elevation in boiling point is called as molal boiling point elevation constant.
Solution 2
Molal elevation constant (Kb) is defined as the elevation in boiling point of a solution when one mole of a non volatile solute is dissolved in one kilogram of a volatile solvent.
APPEARS IN
RELATED QUESTIONS
Arrange the following increasing order of their boiling point:
CH3CH2OH, CH3CHO, CH3–O–CH3
Exactly 1 g of urea dissolved in 75 g of water gives a solution that boils at 100.114°C at 760 torrs. The molecular weight of urea is 60.1. The boiling point elevation constant for water is:
Which has the lowest boiling point at 1 atm pressure?
People add sodium chloride to water while boiling eggs. This is to ____________.
Which of the following has the lowest boiling point?
The unit of ebulioscopic constant is ______.
AB2 is 10% dissociated in water to A2+ and B−. The boiling point of a 10.0 molal aqueous solution of AB2 is ______°C. (Round off to the Nearest Integer).
[Given: Molal elevation constant of water Kb = 0.5 K kg mol−1 boiling point of pure water = 100°C]
Assertion (A): Elevation in boiling point is a colligative property.
Reason (R): The lowering of vapour pressure of solution causes elevation in boiling point.
Calculate the boiling point elevation for a solution prepared by adding 10 g of MgCl2 to 200 g of water, assuming MgCl2 is completely dissociated.
(Kb for Water = 0.512 K kg mol−1, Molar mass MgCl2 = 95 g mol−1)
Which of the following aqueous solution will have the highest boiling point?
