Question

13. A sample of 0.53 g of carbon dioxide was obtained by heating 1.31 g of calcium carbonate. What is the percent yield for this reaction? CaCO3(s)—CaO(s) + CO2(S) 14. Citric acid, C,H,O,, a component of jams, jellies, and fruity soft drinks, is prepared industrially via fermentation of sucrose by the mold Aspergillus niger. The equation representing this reaction is C2H2,0,1 + H2O +302—2C,H,O,+ 4H2O What mass of citric acid is produced from the reaction of 150. grams of sucrose if the yield is 92.30%? 15. The phosphorus pentoxide used to produce phosphoric acid for cola soft drinks is prepared by burning phosphorus in oxygen. (A) What is the limiting reactant when 0.200 mol of P, and 0.200 mol of O, react according to P,+50, P,0.? (B) Calculate the percent yield if 10.0 g of P,00 is isolated from the reaction

Answer 1

be the mass of lo, preduced by (alos looj ot (aco gives 1-31 g Calo gives Cross m tiply 106x 2-1-314Y theartical yield T-31 X 44 O-S764JE L00 Acteal giclds 053 Actual theoretical yicld= OS3 Xl00 O-ST64 91.95%