Some Exercises Reflecting Green Chemistry Concepts

Three exercises related to green chemistry are presented. In the first exercise students compare two methods to prepare aluminum hydroxide and find a new method that can save more feedstock. The second exercise has students selecting a process that reflects the atom economy concept in three methods of preparing Cu(NO₃)₂. In the third exercise students determine the most reasonable ratio of stoichiometry map for maximum utilization of FeS to prepare Na₂S₂O₃•5H₂O. Through these exercises, students learn the effect of green chemistry concepts.