Acontainer is divided into two compartments by a membrane that is fully permeable to water and small ions. water is added to one side of the membrane (side a) and a 5% solution of sodium chloride (nacl) is added to the other side (side b). in which direction will water molecules move? in which direction will sodium and chloride ions move? in which direction will sodium and chloride ions move? when the concentration is equal on both sides will diffusion stop?