Chemical Reactions 2P(s)+3Cl2(g)2PCl3(l) Two ways to read this reaction: 1. Two atoms of phosphorus react with three molecules of C2 to produce two molecules of PG; 2. Two males of phosphocus react with three moles of CH3. two moles of min. For the reaction: C2H4+3O22CO2+2H2O Which one is not a valid stoichiometric ratio? 1molC2H4=3molO2 2molCO2=3molO2 1molC2H4=1molCO2 1molCO2=1molH2O