Henry’s law states that “The Solubility of Gas is proportional to its partial pressure”. It can be written mathematically as follows
Here the importance of the Henry’s constant is as follows
(1) Increase solubility of Co2 in soft drinks.
(2) During Scuba Diving
(3) Environmental Chemistry
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When 1 mol of NaCl is added to 1 litre of water, the boiling point of water increases. On the other hand, addition of 1 mol of methyl alcohol to one litre of water decreases the boiling point of water. Explain why does this happen.Chemistry - Exemplar
Using Raoult’s law explain how the total vapour pressure over the solution is related to the mole fraction of components in the following solutions.
(i) CHCl3 (l) and CH2Cl2(l)
(ii) NaCl(s) and H2O (l)
Note: In the following questions a statement of assertion followed by a statement of reason is given. Choose the correct answer out of the following choices.
Assertion: When methyl alcohol is added to water, the boiling point of water increases.
Reason: When a volatile solute is added to a volatile solvent elevation in boiling point is observed.
A solution is prepared by dissolved 10 g of non-volatile solute in 200 g of water. It has a vapour pressure of 31.84 mm Hg at 308 K. Calculate the molar mass of the solute.
(Vapour pressure of pure water at 308 K = 32 mm Hg).
Components of a binary mixture of two liquids A and B were being separated by distillation. After some time separation of components stopped and composition of vapour phase became same as that of liquid phase. Both the components started coming in the distillate. Explain why this happened.Chemistry - Exemplar
For a binary ideal liquid solution, the variation in total vapour pressure versus composition of solution is given by which of the curves?Chemistry - Exemplar
KH value for Ar(g), CO2(g), HCHO (g) and CH4(g) are 40.39, 1.67, 1.83×10–5 and 0.413 respectively.
Arrange these gases in the order of their increasing solubility.
100 g of liquid A (molar mass 140 g mol–1) was dissolved in 1000 g of liquid B (molar mass 180 g mol–1). The vapour pressure of pure liquid B was found to be 500 torr. Calculate the vapour pressure of pure liquid A and its vapour pressure in the solution if the total vapour pressure of the solution is 475 Torr.NCERT - Chemistry Part-I
Calculate the mass of a non-volatile solute (molar mass 40 g) which should be dissolved in 114 g octane to reduce its vapour pressure to 80%.NCERT - Chemistry Part-I