--%>
Assignment Help - homework help

What is Henry law constant and its values?

1. The units of Henry Law constant are same as those of pressure, i.e. torr or h bar.


2. Different gases have dissimilar values of Henry law constant. The values of KH for some gases in water are given in table below:

KH values of some gases in water at 298 K

Gas

kH (k bar)

Gas

kH (k bar)

H2

71.18

CH4

41.85

N2

86.78

CO2

1.67

O2

44.0

HCHO

1.83 × 10-5

Ar

40.3

CH2 = CHCl

0.611


3. The KH values of a gas are different in different solvents and it increases with the increase in temperature. For example the KH values of some gases in different solvents and also at different temperatures are given in table below:

KH values of some gases in different solvents and at different temperatures:

2064_henry law.png 

4. The knowledge of KH value of a gas at given temperature can help us in calculation of its solubility at the temperature. It is important to note that as the temperature is increased the solubility of gas decreases. This implies that higher the value of KH of a gas is, lower will be its solubility and vice versa.

   Related Questions in Chemistry

  • Q : Molarity what is the molarity of the

    what is the molarity of the solution prepared by dissolving 75.5 g of pure KOH in 540 ml of solution

    		•
  • Q : Acid Solutions Choose the right answer

    Choose the right answer from following. Volume of water needed to mix with 10 ml 10N NHO3 to get 0.1 N HNO3: (a) 1000 ml (b) 990 ml (c) 1010 ml (d) 10 ml

    		•
  • Q : Modern periodic table and Mendeleevs

    Differentiate between the modern periodic table and Mendeleevs table?

    		•
  • Q : Molar mass of solute The boiling point

    The boiling point of benzene is 353.23 K. If 1.80 gm of a non-volatile solute was dissolved in 90 gm of benzene, the boiling point is increased to 354.11 K. Then the molar mass of the solute is: (a) 5.8g mol-1  (b)

    		•
  • Q : Vander Waals forces Wax is an example

    Wax is an example of: (a) Ionic crystal  (b) Covalent crystal  (c) Metallic crystal  (d) Molecular crystalAnswer: (d) Iodine crystals are molecular crystals, in which constituent particles are molecules having inter particle

    		•
  • Q : Maximum vapour pressure Provide

    Provide solution of this question. Which solution will show the maximum vapour pressure at 300 K: (a)1MC12H22O11 (b)1M CH3 COOH (c) 1MNacl2 (d)1MNACl

    		•
  • Q : Determining mole fraction of water in

    A mixture has 18 g water and 414 g ethanol. What is the mole fraction of water in mixture (suppose ideal behaviour of mixture): (i) 0.1  (ii) 0.4  (iii) 0.7  (iv) 0.9 Choose the right answer from abo

    		•
  • Q : PH of an Alkyl Halide Briefly state the

    Briefly state the pH of an Alkyl Halide?

    		•
  • Q : Problem based on molality of glucose

    Select the right answer of the question. If 18 gm of glucose (C6H12O6) is present in 1000 gm of an aqueous solution of glucose, it is said to be: (a)1 molal (b)1.1 molal (c)0.5 molal (d)0.1 molal

    		•
  • Q : Haloalkanes define primary secondary

    define primary secondary and tertiary alkyl halides with examples

    		•