HW 3 Ideal Gases - roberts(eer474 Homework 3 Ideal gases Shear(52375 This print-out should have 12 questions Multiple-choice questions may continue on

# HW 3 Ideal Gases - roberts(eer474 Homework 3 Ideal gases...

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roberts (eer474) – Homework 3: Ideal gases – Shear – (52375) 1 This print-out should have 12 questions. Multiple-choice questions may continue on the next column or page – find all choices before answering. You may need to look up conversion factors and values of R in the back of your textbook. 001 (part 1 of 3) 10.0 points Methanol (CH 3 OH) is the simplest of the al- cohols. It is synthesized by the reaction of hydrogen and carbon monoxide: CO(g) + 2 H 2 (g) -→ CH 3 OH If 559 mol of CO and 481 mol of H2arepresent, which is the limiting reactant?Helium is used to inflate football-shaped bal-loons that will be released in Memorial sta-dium for the opening game of the footballseason.One 2.00 liter balloon pressurized 1.H2correct2.COExplanation:nCO= 559 molnH2= 481 mollimiting reactant = ?mole ratio :2 mol H21 mol CO.nH2required= 559 mol CO×2 mol H21 mol CO= 1118 mol H2Because there is only 481 mol H2available,the limiting reactant is H2.002(part 2 of 3) 10.0 pointsHow much of the excess reactant remains un-changed?Correct answer: 318.5 mol.Explanation:remaining excess reactant = ?nCOreacting=1 mol CO2 mol H2×481 mol H2= 240.5 mol COnexcessreactant= 559 mol CO-240.5 molCO= 318.5 mol CO003(part 3 of 3) 10.0 pointsHow much CH3OH is formed? Correct answer: 240 . 5 mol. Explanation: n limitingreactant = 481 mol H 2 amounts of CH 3 OH = ? mole ratio : 1 mol CH 3 OH 2 mol H 2 n CH 3 OH = 1 mol CH 3 OH 2 mol H 2 × 481 mol H 2 = 240 . 5 mol CH 3 OH 004 10.0 points