can anyone help with this.Watch
this must mean the concentration of the reactants and products are equal for the system to be in equilibrium.
but I thought equilibrium ment a constant concentration due to the same rate in both directions not equal concentrations so why does the constant have to equal 1?
The range for Kc is roughly
Kc < 10^-10 = reaction does not happen (product concentration too low to be detected)
Kc > 10^10 = reaction goes to completion (reactant concentrations too low to be detected)
Kc from 1 to 10^-10 equilibrium lying to the left hand side.
Kc from 1 to 10^10 equilibrium lying to the right hand side.