State henrys law and its applications.
What is a positive and negative deviation from Raoults law?
The oxygen dissolved in water exerts a partial pressure of 20 kPa in the vapour above water. The molar solubility of oxygen in water is (Round off to the Nearest Integer). Given: Henry’s law constant for . The density of water with dissolved oxygen =
The partial pressure of ethane over a saturated solution containing 0.0656g of ethane is 1 bar. If the solution contains 0.0500g of ethane, then what should be the partial pressure of the gas?
- 0.762 bar
- 0.755 bar
- 0.764 bar
- 0.772 bar
Henrys law constant for the molality of methane in benzene at 298 K is 4.27×105 mm Hg. Calculate the solubility of methane in benzene at 298 K under 760 mm Hg.
The tanks used by scuba divers are filled with air diluted with helium.
For scuba divers , increased pressure increases the solubility of atmospheric gases in blood, thus more N2 is dissolved in blood underwater at high pressure
- Both the statements are correct.
- Statement I is correct whereas statement II is incorrect
- Statement I is incorrect whereas statement II is correct
- Both the statements are incorrect.
The air is a mixture of a number of gases. The major components are oxygen and nitrogen with approximate proportion of 20% is to 79% by volume at 298 K. The water is in equilibrium with air at pressure of 10 atm. At 298 K if the Henry's law constants for oxygen and nitrogen at 298 K are 3.30×107 mm and 6.51×107 mm respectively, calculate the composition of these gases in water.
Value of Henrys constant ?
Increases with an increase in temperature
Decreases with increase in temperature
First increases then decreases
18 g of glucose is added to 178.2 g of water. The vapour pressure of water for this aqueous solution at 100º C is:
Mole fraction of component A in vapour phase is and mole fraction of component A in liquid mixture is , then, the total vapour pressure of liquid mixture is :
- 0.129 M
- 129.03 M
- 0.224 M
- 224.3 M
What is the significance of Henrys Law constant ?
How many millimoles of gas would dissolve in 1 liter of water if gas is bubbled through water at and exerts a partial pressure ofGiven that Henry’s law constant for at ?
What is the application of Henry's law in deep sea diving?
(Where p is the partial pressure of gas over the solution, KH is Henry’s law constant and χ is mole fraction of the gas in the solution.)
- None of the above
(a) Explain the following phenomena with the help of Henry's Law.
(i) Painful condition known as bends.
(ii) Feeling of weakness and discomfort in breathing at high altitude.
(b) Why soda water bottle kept at room temperature fizzes on opening/
- The lowering of vapour pressure is equal to the mole fraction of the solute.
- The relative lowering of vapour pressure is equal to the mole fraction of the solute
- The vapour pressure of the solution is equal to the mole fraction of the solvent.
- The relative lowering of vapour pressure is proportional to the amount of solute in the solution
Reason: As the size of lanthanoids decreases, covalent character of hydroxides decreases and basic character increases.
- If both assertion and reason are true and reason is the correct explanation of assertion.
- If both assertion and reason are false.
- If both assertion and reason are true but reason is not the correct explanation of assertion.
- If assertion is true but reason is false.
Which of the following units is useful in relating concentration of solution with its vapour pressure?
(a) Mole fraction (b) Parts per million
(c) Mass percentage (d) Molality
Then which of the following gas will have the highest solubility in water at the given temperature of 293 K and atmospheric pressure?
State Henry's law and mention some important applications?
The enthalpy of vapourisation of water is 186.5 KJ/mol, then what is it's entropy of vapourisation
The system that forms maximum boiling azeotrope is
Carbon disulphide - Acetone
Benzene - Toluene
Acetone - Chloroform
n-hexane - n-heptane
Low concentration of oxygen in the blood and tissues of people living at high altitude is due to..............
(a) low temperature
(b) low atmospheric pressure
(c) high atmospheric pressure
(d) Both low temperature and high atmospheric pressure
- 0.005 bar
- 0.007 bar
- 0.014 bar
- 0.071 bar
C. Benzene- methanol
Why the solubility of gas in liquid decreases with increase in KH value at given pressure