Pentane gas, C5H12, reacts with oxygen to produce carbon

General, Organic, and Biological Chemistry: Structures of Life | 4th Edition | ISBN: 9780321750891 | Authors: Karen Timberlake

Problem 117CQ Chapter 6

General, Organic, and Biological Chemistry: Structures of Life | 4th Edition

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General, Organic, and Biological Chemistry: Structures of Life | 4th Edition | ISBN: 9780321750891 | Authors: Karen Timberlake

General, Organic, and Biological Chemistry: Structures of Life | 4th Edition

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Problem 117CQ

Pentane gas, C5H12, reacts with oxygen to produce carbon dioxide and water. (6.6, 6.7, 6.8) a. How many grams of pentane must react to produce 4.0 moles of water?b. How many grams of CO2 are produced from 32.0 g of oxygen and excess pentane?c. How many grams of CO2 are formed if 44.5 g of C5H12 is reacted with 108 g of O2?

Step-by-Step Solution:

Solution 117CQStep 1 of 4:Given reaction: a. Here, we are asked to find the grams of pentane that must react to produce 4.0 moles of water.Molar mass of C5H12 = 72.15 g/mol. This means, 1 mol C5H12 = 72.15 g. So, the mole-mass factor is: and To produce 4.0 moles of water, 4/6 moles of pentane must be reacted. Hence, the mass of pentane that reacts is: = mol C5H12 = 48.1 g C5H12Hence, the grams of pentane that must react to produce 4.0 moles of water is 48 g ________________Step 2 of 4:b. Here, we are asked to find the grams of CO2 produced from 32.0 g of oxygen and excess pentane.Molar mass of O2 = 31.998 g/mol. This means, 1 mol O2 = 31.998 g. So, the mole-mass factor is: and In the equation, we see 5 mol CO2 = 8 mol O2. Hence, the mole-mole factor is: and Molar mass of CO2 = 44.01 g/mol. This means, 1 mol CO2 = 44.01 g. So, the mole-mass factor is: and = 32.0 g of O2 = 27.50 g CO2Hence, the grams of CO2 produced from 32.0 g of oxygen and excess pentane is 27.50 g.________________

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Chapter 6, Problem 117CQ is Solved
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Textbook: General, Organic, and Biological Chemistry: Structures of Life
Edition: 4
Author: Karen Timberlake
ISBN: 9780321750891

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Pentane gas, C5H12, reacts with oxygen to produce carbon

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