Chemistry Phosphorous acid upon thermal decomposition yields phosphoric acid and____________________? Options:A. PhosphineB. PhosphorusC. WaterD. Phosphorus pentoxideView AnswerA. Phosphine Continue Reading Previous: By which method the molecular mass of benzene was determined as 78.108 ?Next: Water gas heated at 450?C and 200 atm pressure in the presence of ZnO+Cr2O3 will produce________________?