Le Chatelier's Principle                                                 Le Chatelier's Principle

In this case, the stress applied to the equilibrium system is an increase in the concentration of SCN^-(from the dissociation of NaSCN). To offset this stress, some Fe³⁺ ions react with the added SCN^- ions, & the equilibrium shifts from right to left:

Consequently, the red colour of the solution deepens

  What would happen if we added Ferum (III) nitrate [Fe(NO₃)₃] to the original solution ?