Your boss wants you to make 500 mL of an Iron stock solution with an Iron concentration of 40
mg/L. You have a bottle of hydrated Iron(II)chloride (also known as ferrous chloride) FeCl2(H20)2 which is a crystaline solid. Complete the calculations needed to make this solution and briefly describe how you would make this solution. (Note that only a fraction of the chemical you weigh out to make the solution is actually Iron.) What is the concentration of the solution expressed as mmol/L Fe?





