what is the theoretical (or calculated) yield of NH4 Al (SO4)2 * 12 H2O formed from 1.872 g of Al(OH)3?Assume all other reagents are in excess. 2Al(OH)3 (s) + 3H2SO4 (aq) = Al2(SO4)3 (aq) + 6H2O (l) (a) Al2(SO4)3 (aq) + (NH4)2 SO4 (aq) + 24 H2O (l) = 2NH4Al (SO4)2 * 12H2O (s) (b)