My sister tried many ways to get this solution but it didnt work so she needs your help on how to do this problem. Plz Plz Plz do it before 10:00 PM. :surprised 2C2H4 (g) + Br2 (g) + Cl2 (g) -----) 2C2H4ClBr(g) A Skyline student reacts 15 L of C2H4, 20 L of Br2 (g) and 10 L of Cl2 to form C2H4ClBr(g). Assume the gasses begin the reaction at STP. Which reactant is the limiting reagent?