Question

hydrogen chloride gas reacts with oxygen gas to yield chlorine gas and water vapor in an equilibrium reaction. an experiment was performed in a closed vessel starting with a mixture of 0.50 M HCl and 0.050 M O2. the amount of chlorine was monitored until no change was observed. the final concentration of the chlorine was 0.048 M chlorine.

a) prepare an ICE table to answer the following:

b) what is the Keq for this reaction?

c) what are the equilibrium concentrations of all substances in the reaction?

Answer 1

........4HCl + O2 ==> 2Cl2 + 2H2O
initial.0.05..0.05....0......0
change...-4x....-x....2x.....2x
equil.0.05-4x.0.05-x.0.048...2x

The ICE table gives you all of the info you need to answer b and c.