The chemical reactions involved in the above sequence are as follows:

AL (aluminum) reacts with CL2 (chlorine gas) to form ALCL3 (aluminum chloride).ALCL3 reacts with water (H2O) to form AL(OH)3 (aluminum hydroxide).AL(OH)3 undergoes dehydration to form AL2O3 (aluminum oxide).AL2O3 reacts with sodium hydroxide (NaOH) to form sodium aluminate (Na/AL(OH)4/).Sodium aluminate reacts with sulfuric acid (H2SO4) to form AL2(SO4)3 (aluminum sulfate).