William asks…When forming a precipitate such as AgCl why do we add a small amount of Acid to the aqueous solution?The acid does not react with the AgCl at all so why is it included?
Also AgCl is pretty insoluble in water...Nancy answers:AgCl tends to precipitate as a colloidal precipitate. In this form it is difficult to filter and tends to hold on to impurities. By adding HCl to the aqueous solution you perform a function called aging, or digestion, on the AgCl crystals growing them
