2.1.1 Saturated solution State A solution is in dynamic equilibrium with respect dissolved substance A dynamic equilibrium is reached in which the rate at which ions leave the crystals equals the rate at which ions return to the crystals2.1.1 Saturated solution State: A solution is in dynamic equilibrium with respect dissolved substance. A dynamic equilibrium is reached in which the rate at which ions leave the crystals equals the rate at which ions return to the crystals