1. Derive the expression for the gobal equilibrium constant K_eq.

2. The fields for the rate constants are editable. Try, for example, to change their values (Reset the simulation and actualize each new value by pressing the Return/Enter key) so that the global equilibrium constant is 1/5.0 instead of the default value 5.0. Observe the evolution of the reactants concentrations and the sign of Gibbs's energy. Is there any contradition with the second law of thermodynamics? Why?