Compare saponification and hydrogenation. select the correct answer below: saponification is a process that produces soap, usually from fats and lye. hydrogenation is a chemical reaction between molecular hydrogen (h2) and another compound or element, usually in the presence of a catalyst. saponification is a chemical reaction between molecular hydrogen (h2) and another compound or element, usually in the presence of a catalyst. hydrogenation is a process that produces soap, usually from fats and lye. saponification is the making of a fat or triacylglycerol from the components of glycerol and fatty acids. hydrogenation of a fat or a triacylglycerol is the reverse process of saponification.