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19 solutions

Percent Yield

Q. Determine the theoretical yield and the percent yield if 21.8 g of K2CO3 is produced from reacting 27.9 g KO2 with 29.0 L of CO2 (at STP). The molar mass of KO2 = 71.10 g/mol and K2CO3 = 138.21 g/mol. 4 KO2(s) + 2 CO2(g) → 2 K2CO3(s) + 3 O2(g)

Solved • Jul 22, 2019

Percent Yield

Q. Give the percent yield when 28.16 g of CO2 are formed from the reaction of 5.000 moles of C8H18 with 5.000 moles of O2. 2 C8H18 + 25 O2 → 16 CO2 + 18 H2O

Solved • Jul 15, 2019

Percent Yield

Q. A sample of 0.46 g of carbon dioxide was obtained by heating 1.15 g of calcium carbonate. What is the percent yield for this reaction? CaCO3(s) —> CaO(s) + CO2(s)

Solved • Jul 8, 2019

Percent Yield

Q. Citric acid, C6H807, a component of jams, jellies, and fruity soft drinks, is prepared industrially via fermentation of sucrose, C12H22011, by the mold Aspergillus niger. The equation representing this reaction is as follows. C12H22°11 + H20 + 3 02 —> 2 C6H807 + 4 H20 What mass (in kg) of citric acid is produced from exactly 1 metric ton (1 x 103 kg) of sucrose if the yield is 84.94

Solved • Jul 8, 2019

Percent Yield

Q. If 4.5 g of HCl reacts with 15.00 g of CaCO3, according to the following balanced chemical equation: 2 HCl + CaCO3 -> CaCl2 + H2O + CO2 a. Calculate the theoretical yield of CO2 b. Using the theoretical yield calculated in part a, calculate the percentage yield if 2.50 g of CO2 is isolated after the reaction.

Solved • Jul 1, 2019

Percent Yield

Q. Consider the following reeaction: 3CuCl2 + 2 Al -----> 2AlCl3 + 3 Cu If 5g Cu is produced by combining 20g Al with 100g CuCl2, what is the % yield? and what is the limiting reagent?

Solved • Jun 19, 2019

Percent Yield

Q. A reaction of 38.9 g of Na and 45.7 g of Br2 yields 48.0 g of NaBr. What is the percent yield?

Solved • Jun 18, 2019