--%>
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 : Molar concentration of Iron chloride

    Provide solution of this question. A certain aqueous solution of FeCl3 (formula mass =162) has a density of 1.1g/ml and contains 20.0% Fecl. Molar concentration of this solution is: (a) .028 (b) 0.163 (c) 1.27 (d) 1.47

    		•
  • Q : Vapour pressure of methanol in water

    Give me answer of this question. An aqueous solution of methanol in water has vapour pressure: (a) Equal to that of water (b) Equal to that of methanol (c) More than that of water (d) Less than that of water

    		•
  • Q : Dipole moment of chlorooctane

    Illustrate the dipole moment of chlorooctane?

    		•
  • Q : Solubility product On passing H 2 S gas

    On passing H2S gas through a particular solution of Cu+ and Zn+2 ions, first CuS is precipitated because : (a)Solubility product of CuS is equal to the ionic product of ZnS (b) Solubility product of CuS is equal to the solubility product

    		•
  • Q : Question on molality Provide solution

    Provide solution of this question. Which of the following concentration factor is affected by change in temperature : (a)Molarity (b) Molality (c)Mole fraction (d)Weight fraction

    		•
  • Q : Describe characteristics of halides and

    Halides characteristics

    		•
  • Q : Solution problem What is the correct

    What is the correct answer. To made a solution of concentration of 0.03 g/ml of AgNO3, what quantity of AgNO3 must be added in 60 ml of solution: (a) 1.8  (b) 0.8  (c) 0.18  (d) None of these

    		•
  • Q : Reason for medications contain hcl What

    What is the reason behind this that some medications contain hcl?

    		•
  • Q : What is Ideal Mixtures Ideal mixing

    Ideal mixing properties can be recognized in the formation of an ideal gas mixture from ideal gases. Consider the formation of a mixture of gases i.e. a gaseous solution, from two mixtures of pure gases. A useful characterization of an ideal mixture, or soluti

    		•
  • Q : Hydrocarbons list and identify

    list and identify differences between the major classes of hydrocarbons

    		•