Advertisements
Advertisements
प्रश्न
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 a pressure of 10 atm. At 298 K if the Henry’s law constants for oxygen and nitrogen are 3.30 × 107 mm and 6.51 × 107 mm respectively, calculate the composition of these gases in water.
उत्तर
Total pressure of air in equilibrium with water = 10 atmosphere
As air contains 20% oxygen and 79% nitrogen by volume,
∴ Partial pressure of oxygen, `("p"_("O"_2))` = `20/100 xx 10` atm = 2 atm = 2 × 760 mm Hg = 1520 mm Hg
Partial pressure of nitrogen, `("p"_("N"_2))` = `79/100 xx 10` atm = 7.9 atm = 7.9 × 760 mm Hg = 6004 mm Hg
Now, according to Henry’s law:
p = KH.x
For oxygen:
`"p"_("O"_2) = "K"_"H" xx "x"_("O"_2)`
`=> "x"_("O"_2) = "p"_("O"_(2))/"K"_"H"`
= `(1520 "mm Hg")/(3.30xx10^(7) "mm Hg")` ...(Given KH = 3.30 × 107 mm Hg)
= 4.61 × 10−5
For nitrogen:
`"p"_("N"_2) = "K"_"H" xx "x"_("N"_(2))`
`=>"x"_("N"_(2)) = "p"_("N"_(2))/"K"_"H"`
= `(6004 "mm Hg")/(6.51xx10^(7) "mm Hg")` ...(Given KH = 6.51 × 107 mm Hg)
= 9.22 × 10−5
Hence, the mole fractions of oxygen and nitrogen in water are 4.61 × 10−5 and 9.22 × 10−5, respectively.
APPEARS IN
संबंधित प्रश्न
Henry’s 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.
Give reasons for the following :
Aquatic animals are more comfortable in the cold water than in warm water.
The solubility product of PbCl2 at 298K is 1.7 × 10-5. Calculate the solubility of PbCl2 in g/lit. at 298K.
Atomic Weights: [Pb = 207 and Cl = 35.5]
A solution is prepared by dissolving 9.25 g of non-volatile solute in 450 mL of water. It has an osmotic pressure of 350 mm of Hg at 27°C. Assuming the solute is non-electrolyte, determine its molecular mass. (R = 0.0821 lit atm K-1 mol-1)
Write the name of gas released when Cu is added to the conc. HNO3
The statement “If 0.003 moles of a gas are dissolved in 900 g of water under a pressure of 1 atmosphere, 0.006 moles will be dissolved under a pressure of 2 atmospheres”, illustrates.
According to Henry’s law, the amount of gas that will dissolve in blood plasma or any other liquid is determined by which of these factors?
Value of Henry's constant KH ______.
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.
Explain the following phenomena with the help of Henry’s law.
Feeling of weakness and discomfort in breathing at high altitude.
State Henry’s law and explain why are the tanks used by scuba divers filled with air diluted with helium (11.7% helium, 56.2% nitrogen and 32.1% oxygen)?
Write the two applications of Henry's law.
Identify that the following compound is insoluble, partially soluble and highly soluble in water.
phenol
Identify that the following compound is insoluble, partially soluble and highly soluble in water.
formic acid
Identify that the following compound is insoluble, partially soluble and highly soluble in water.
chloroform
