Answer 4.2

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              Chemical Equilibria|Le Chatelier's Principle|Factors Affecting Chemical equilibria|
          
                      The Haber Process|The Contact Process|Equilibrium Constants

Calculate units for the following reactions: N2(g) + 3H2(g) <=> 2NH3(g)

                                         2         3
                        Units = (mol/dm3) /(mol/dm3) x (mol/dm3)
                              = 

I2(s) <=> I2(g)

                        Units = mol/dm3

I2(g) + H2(g) <=> 2HI(g)

                                        2
                        Units = (mol/dm3) /(mol/dm3)x (mol/dm3)
                              = No units

N2O4(g)<=> 2NO2(g)

                                        2
                        Units = (mol/dm3) /(mol/dm3)
                              = mol/dm3