--%>
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 : Q what is the basicity of primary

    what is the basicity of primary secondary and tertiary amines in chlorobenzene

    		•
  • Q : Precipitation problem On passing H 2 S 

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

    		•
  • Q : Molarity 20mol of hcl solution requires

    20mol of hcl solution requires 19.85ml of 0.01 M NAOH solution for complete neutralisation. the molarity of hcl solution

    		•
  • Q : Concentration factor affected by

    Can someone please help me in getting through this problem. Which of the given concentration factor is affected by the change in temperature: (1) Molarity (2) Molality (3) Mole fraction (4) Weight fraction

    		•
  • Q : What are homogenous catalyst? Give few

    When a catalyst mixes homogeneously with the reactants and forms a single phase, the catalyst is said to be homogeneous and this type of catalysis is called homogeneous catalysis. Some more examples of homogeneous catalysis are:    SO2

    		•
  • Q : Problem on Adiabatic expansion

    Calculate the change in entropy for the system for each of the following cases. Explain the sign that you obtain by a physical argument a) A gas undergoes a reversible, adiabatic expansion from an initial state at 500 K, 1 MPa, and

    		•
  • Q : Cations Chromium(III) hydroxide is

    Chromium(III) hydroxide is highly insoluble in distilled water but dissolves readily in either acidic or basic solution. Briefly explain why the compound can dissolve in acidic or in basic but not in neutral solution. Write appropriate equations to support your answer

    		•
  • Q : Entropy on molecular basis. The

    The equation S = k in W relates entropy to W, a measure of the number of different molecular level arrangements of the system.In the preceding developments it was unnecessary to attempt to reach any "explana

    		•
  • Q : Preparation of ammonium sulphate Select

    Select the right answer of the question. Essential quantity of ammonium sulphate taken for preparation of 1 molar solution in 2 litres is: (a)132gm (b)264gm (c) 198gm (d) 212gm

    		•
  • Q : Describe Transformation Matrices. Each

    Each symmetry operation can be represented by a transformation matrix.You have seen what happens when a molecule is subjected to the symmetry operation that corresponds to any of the symmetry elements of the point group to which the molecule belongs. The m

    		•