Laboratory Manual Chemistry in Context
8th Edition
ISBN: 9780073518121
Author: American Chemical Society
Publisher: McGraw-Hill Education
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Textbook Question
Chapter 4, Problem 35Q
Use Figure 5.6 to compare the energy released for the combustion of 1 gallon of ethanol and 1 gallon of gasoline. Assume gasoline is pure octane (C8H18). Explain the difference.
Hint: You will need to consider their densities.
Figure 5.6
Energy differences (in kJ/g) for the combustion of methane (CH4, n-octane (C8H18), coal (assumed to be pure carbon), ethanol (C2H5OH), and wood (presumed to be glucose). Carbon dioxide and water are formed in the gas phase.
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Chapter 4 Solutions
Laboratory Manual Chemistry in Context
Ch. 4.1 - Although power plants require several steps to...Ch. 4.1 - Prob. 4.3YTCh. 4.2 - Prob. 4.5CTCh. 4.3 - Prob. 4.7CTCh. 4.3 - Prob. 4.9YTCh. 4.4 - Prob. 4.10CTCh. 4.4 - The combustion of one gram of natural gas releases...Ch. 4.4 - Prob. 4.12CTCh. 4.5 - Prob. 4.14SCCh. 4.5 - Scientific Practices Coal Versus Ethanol On the...
Ch. 4.6 - Prob. 4.17YTCh. 4.7 - Beginning in the 1920s, the octane-booster...Ch. 4.9 - Prob. 4.21CTCh. 4.10 - Prob. 4.22CTCh. 4.11 - Have you ever been served cherries Jubilee or...Ch. 4.11 - Prob. 4.26CTCh. 4 - Prob. 4.1CTCh. 4 - Prob. 1QCh. 4 - Prob. 2QCh. 4 - Prob. 3QCh. 4 - Energy exists in different forms in our natural...Ch. 4 - A coal-burning power plant generates electrical...Ch. 4 - Prob. 6QCh. 4 - Prob. 7QCh. 4 - Prob. 8QCh. 4 - Mercury (Hg) is present in trace amounts in coal,...Ch. 4 - Prob. 10QCh. 4 - Here are the condensed structural formulas for two...Ch. 4 - Prob. 12QCh. 4 - Prob. 13QCh. 4 - Prob. 14QCh. 4 - During petroleum distillation, kerosene and...Ch. 4 - Prob. 16QCh. 4 - a. Write the balanced chemical equation for the...Ch. 4 - Prob. 18QCh. 4 - Prob. 19QCh. 4 - State whether these processes are endothermic or...Ch. 4 - Use the bond energies in Table 5.1 to calculate...Ch. 4 - Use the bond energies in Table 5.1 to calculate...Ch. 4 - Ethanol can be produced by fermentation. Another...Ch. 4 - Here are structural formulas for ethane, ethene...Ch. 4 - These three compounds all have the same chemical...Ch. 4 - Catalysts speed up cracking reactions in oil...Ch. 4 - Explain why cracking is a necessary part of the...Ch. 4 - Consider this equation representing the process of...Ch. 4 - Prob. 29QCh. 4 - Consider these three alcohols: methanol, ethanol,...Ch. 4 - Prob. 31QCh. 4 - Prob. 32QCh. 4 - Prob. 33QCh. 4 - Compare and contrast a molecule of biodiesel with...Ch. 4 - Use Figure 5.6 to compare the energy released for...Ch. 4 - Prob. 36QCh. 4 - The sustainability of burning coal (and other...Ch. 4 - In this chapter, we approximated the chemical...Ch. 4 - Prob. 39QCh. 4 - Compare the processes of combustion and...Ch. 4 - How might you explain the difference between...Ch. 4 - Write a response to this statement: Because of the...Ch. 4 - The concept of entropy and probability is used in...Ch. 4 - Bond energies such as those in Table 5.1 are...Ch. 4 - Use the bond energies in Table 5.1 to explain why...Ch. 4 - Prob. 46QCh. 4 - Prob. 47QCh. 4 - Prob. 48QCh. 4 - Prob. 49QCh. 4 - Prob. 50QCh. 4 - Prob. 51QCh. 4 - Prob. 52QCh. 4 - Prob. 53QCh. 4 - Use a diagram to show the relationship among these...Ch. 4 - On a timescale of a few years, the combustion of...Ch. 4 - Prob. 56QCh. 4 - Emissions of some pollutants are lower when...Ch. 4 - Although coal contains only trace amounts of...Ch. 4 - Prob. 59QCh. 4 - An article in Scientific American pointed out that...Ch. 4 - C. P. Snow, a noted scientist and author, wrote an...Ch. 4 - Chemical explosions are very exothermic reactions....Ch. 4 - Prob. 64QCh. 4 - Tetraethyllead (TEL) was first approved for use in...Ch. 4 - Tetraethyllead (TEL) has an octane rating of 270....Ch. 4 - Another type of catalyst used in the combustion of...Ch. 4 - Figure 5.8 shows energy differences for the...Ch. 4 - Prob. 69Q
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