Advertisements
Advertisements
प्रश्न
State Henry's Law. What is the effect of temperature on the solubility of a gas in a liquid?
Advertisements
उत्तर
Henry's Law states that the solubility of a gas in a liquid is directly proportional to the pressure of the gas. If we use the mole fraction of a gas in the solution as a measure of its solubility, then it can be said that the mole fraction of gas in the solution is proportional to the partial pressure of the gas over the solution. The most commonly used form of Henry’s Law states that “the partial pressure of a gas in vapour phase (p) is directly proportional to the mole fraction of the gas (x) in the solution, i.e.
p ∝ x
p = KH x
where KH = Henry’s Law Constant
The solubility of gases is dependent on temperature. An increase in temperature results in a decrease in gas solubility in liquid, while a decrease in temperature results in an increase of gas solubility in liquid.
An increase in temperature causes an increase in kinetic energy, resulting in a more rapid motion of molecules, breaking intermolecular bonds which enable molecules to escape from the solution allowing the gases dissolved to evaporate more readily. Hence causing decrease in the solubility of gases in liquids.
APPEARS IN
संबंधित प्रश्न
Why do gases always tend to be less soluble in liquids as the temperature is raised?
Identify that the following compound is insoluble, partially soluble or highly soluble in water:
pentanol
The solubility product (Ksp) of BaSO4 is 1.5 X 10-9.Calculate the solubility of barium sulphate in pure water and in 0.1 M BaCl2.
Low concentration of oxygen in the blood and tissues of people living at high altitude is due to ______.
Which of the following factor(s) affect the solubility of a gaseous solute in the fixed volume of liquid solvent?
(a) nature of solute
(b) temperature
(c) pressure
(i) (a) and (c) at constant T
(ii) (a) and (b) at constant P
(iii) (b) and (c) only
(iv) (c) only
KH value for \[\ce{Ar(g)}\], \[\ce{CO2(g)}\], \[\ce{HCHO (g)}\] and \[\ce{CH4(g)}\] are 40.39, 1.67, 1.83 × 10–5 and 0.413 respectively. Arrange these gases in the order of their increasing solubility.
What is the significance of Henry’s Law constant KH?
Explain the following phenomena with the help of Henry’s law.
Painful condition known as bends.
If O2 gas is bubbled through water at 303 K, the number of millimoles of O2 gas that dissolve in 1 litre of water is ______. (Nearest integer)
(Given: Henry's Law constant for O2 at 303 K is 46.82 k bar and partial pressure of O2 = 0.920 bar)
(Assume solubility of O2 in water is too small, nearly negligible)
Identify that the following compound is insoluble, partially soluble and highly soluble in water.
phenol
