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Liquid hexane reacts with gaseous oxygen gas to produce gaseous carbon dioxide and gaseous water . if 3.63 g of carbon dioxide is produced from the reaction of 2.6 g of hexane and 5.5 g of oxygen gas, calculate the percent yield of carbon dioxide. round your answer to 2 significant figures.
Accepted Answer
Here's how to calculate the percent yield of carbon dioxide:
1. Write the balanced chemical equation:
C6H14 (l) + 19/2 O2 (g) → 6 CO2 (g) + 7 H2O (g)
2. Calculate the theoretical yield of CO2:
Convert grams of hexane to moles: 2.6 g C6H14
(1 mol C6H14 / 86.18 g/mol) = 0.030 mol C6H14
Use the mole ratio from the balanced equation to find moles of CO2: 0.030 mol C6H14
(6 mol CO2 / 1 mol C6H14) = 0.18 mol CO2
Convert moles of CO2 to grams: 0.18 mol CO2
(44.01 g/mol) = 7.9 g CO2
3. Calculate the percent yield:
Percent yield = (actual yield / theoretical yield)
100%
Percent yield = (3.63 g / 7.9 g)
100% = 46%
Therefore, the percent yield of carbon dioxide is 46%.
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