Advertisements
Advertisements
Question
Account for the following :
H2S has lower boiling point than H2O.
Advertisements
Solution
H2S molecules are involved in weaker hydrogen bonding than H2O molecules. This is because of the lower electronegativity of sulphur than oxygen. So, less energy is required to break the hydrogen bonds in H2S. Thus, the boiling point of H2S is lower than that of H2O.
APPEARS IN
RELATED QUESTIONS
Define the following term:
Molal elevation constant (Kb)
Arrange the following increasing order of their boiling point:
CH3CH2OH, CH3CHO, CH3–O–CH3
Arrange the following in increasing order of boiling points:
(CH3)3 N, C2 H5 OH, C2 H5 NH2
0.450 g of urea (mol. wt. 60) in 22.5 g of water show 0.170°C of elevation in boiling point. The molal elevation constant of water is:
Which of the following aqueous solutions should have the highest boiling point?
The unit of ebulioscopic constant is ______.
Calculate the molal elevation constant for water given that 0.2 molal solution of non-volatile and non-electrolyte solute increases the boiling point of water by 0.104 K.
Boiling point of a 2% aqueous solution of a non-volatile solute A is equal to the boiling point of 8% aqueous solution of a non-volatile solute B. The relation between molecular weights of A and B is ______.
If the molality of a dilute solution is doubled, the value of the molal elevation constant (Kb) will be ______.
Which of the following aqueous solution will have the highest boiling point?
