Cu(H20)42+ (aq) + 4 Cl- <--> CuCl42- (aq) + 4 H2O (l)
Is this a heterogeneous or homogeneous reaction?
I would have thought hetero because (aq) and (l) are different. But the book says that H2O takes part of the equilibrium law, suggesting this is homogeneous.
So does adding H2O to the reaction cause it to shift to the left?