Question

Cl2 + 3F2 → 2CIF: Chlorine reacts with fluorine to form gaseous chlorine trifluoride. You start with 500g of chlorine and 95.0g of fluorine. a) What is the limiting reagent? b) What is the theoretical yield of chlorine trifluoride in grams? c) How many grams of excess reactant remain un-reacted? 2C2H2 + 50, 400, + 2H2O Oxyacetylene torches used in welding and cutting steel reach temperatures near 2000'C. The reaction involved is the complete combustion of acetylene (CH2). Starting with 175 g of CzHz and 500 g of Oz a) Which is the limiting reactant? b) What is the theoretical yield of CO2? c) If 525 g of CO, is produced, what is the yield d) Based on the % yield, how many grams of CH are needed to produce the theoretical mass of CO 2 3A1+ 3NH.CIO. → AI:O+ AICI + 3NO + 6H30 The space shuttle uses aluminum metal and ammonium perchlorate (NH.CIO) in its reusable booster rockets. The products of the reaction are aluminum oxide, aluminum chloride, nitrogen monoxide, and steam. A small scale reaction mixture is 5.75 g of Al and 7.32 g of NH.CIO.. a) Which is the limiting reactant? b) If all the limiting reactant is consumed, how many grams aluminum chloride are produced? c) How many grams of excess reactant remain un-reacted? d) If 1.87 g of aluminum chloride is formed, what is the yield c) Based on the % yield, how many grams of Al are needed to produce the theoretical mass of aluminum chloride? nnnnnnn

Answer 1

I c + 3f₂ → 201f3 mass of a = sog mole of q = 50g -0.7oumol. 71 simal mole of f = 95 g - 2.5 mole 38 Simol Imole u 10.704 moh Juact I will with 3 mole of f2 want → 2.112 mol t o Ca .. U in limiting steagent mole cy Clfy farmed = 2x0.704 = 1.408 mole mals of lfz = molex molar man 1.408 molex 92.45 g mier (( Excees fy C = 130.17 gram left = (2.5 -2. 112) mol = 0.388 mole mass of fy left = 0.388 mot X 389% = /14.74 gram