CHEMISTRY
2nd Edition
ISBN: 9781593995782
Author: OpenStax
Publisher: XANEDU PUBLISHING
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Textbook Question
Chapter 5, Problem 2E
Prepare a table identifying several energy transitions that take place during the typical operation of an automobile.
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Complete the following table. The only density needed is already given. Show your
calculations in a neat and easy-to-follow manner in the space below the table. All units
should be included and significant figures should be given close attention. Be sure to notice
that the amount of material should be in millimoles rather than moles, and the theoretical
mass of the product should in milligrams rather than grams.
LOCH 3
+
H2SO4
HNO 3
O=C-OCH 3
NO2
x
H₂O
F.W.
4.0 mL 1.3 M
amount
0.50 mL
in H2SO4
mg Theoretical
Theoretical
mmoles
density
1.09
Kumada Coupling:
1. m-Diisobutylbenzene below could hypothetically be synthesized by Friedel-Crafts reaction. Write out the reaction with a
mechanism and give two reasons why you would NOT get the desired product.
Draw the reaction (NOT a mechanism) for a Kumada coupling to produce the molecule above from m-dichlorobenzene.
Calculate the theoretical yield for the reaction in question 2 using 1.5 g of p-dichlorobenzene and 3.0 mL isobutyl bromide.
What signals appeared/disappeared/shifted that indicate that you have your intended product and not starting material? What
other impurities are present in your product and how do you know?
Wintergreen from Aspirin:
1. In isolating the salicylic acid, why is it important to press out as much of the water as possible?
2. Write the mechanism of the esterification reaction you did.
3.
What characteristic absorption band changes would you expect in the IR spectrum on going from aspirin to salicyclic acid and
then to methyl salicylate as you did in the experiment today? Give approximate wavenumbers associated with each functional
group change.
What signals appeared/disappeared/shifted that indicate that you have your intended product and not starting material? What
other impurities are present in your product and how do you know?
Chapter 5 Solutions
CHEMISTRY
Ch. 5 - A burning match and a bonfire may have the same...Ch. 5 - Prepare a table identifying several energy...Ch. 5 - Explain the difference between heat capacity and...Ch. 5 - Calculate the heat capacity, in joules and in...Ch. 5 - Calculate the heat capacity, in joules and in...Ch. 5 - How much heat, in joules and in calories, must be...Ch. 5 - How much heat, in joules and in calories, is...Ch. 5 - How much would the temperature of 275 g of water...Ch. 5 - If 14.5 kJ of heat were added to 485 g of liquid...Ch. 5 - A piece of unknown substance weighs 44.7 g and...
Ch. 5 - A piece of unknown solid substance weighs 437.2 g,...Ch. 5 - An aluminum kettle weighs 1.05 kg. (a) What is the...Ch. 5 - Most people find waterbeds uncomfortable unless...Ch. 5 - A 500-mL bottle of water at room temperature and a...Ch. 5 - Would the amount of heat measured for the reaction...Ch. 5 - Would the amount of heat absorbed by the...Ch. 5 - Would the amount of heat absorbed by the...Ch. 5 - How many milliliters of water at 23 C with a...Ch. 5 - How much will the temperature of a cup (180 g) of...Ch. 5 - A 45-g aluminum spoon (specific heat 0.88 J/g C)...Ch. 5 - The temperature of the cooling water as it leaves...Ch. 5 - A 70.0-g piece of metal at 80.0 °C is placed in...Ch. 5 - If a reaction produces 1.506 kJ of heat, which is...Ch. 5 - A 0.500-g sample of KCl is added to 50.0 g of...Ch. 5 - Dissolving 3.0 g of CaCl2(s) in 150.0 g of water...Ch. 5 - When 50.0 g of 0.200 M NaCl(aq) at 24.1 C is added...Ch. 5 - The addition of 3.15 g of Ba(OH)28H2O to a...Ch. 5 - The reaction of 50 mL of acid and 50 mL of base...Ch. 5 - If the 3.21 g of NH4NO3 in Example 5.6 were...Ch. 5 - When 1.0 g of fructose, C6H12O6(s), a sugar...Ch. 5 - When a 0.740-g sample of trinitrotoluene (TNT),...Ch. 5 - One method of generating electricity is by burning...Ch. 5 - The amount of fat recommended for someone with a...Ch. 5 - A teaspoon of the carbohydrate sucrose (common...Ch. 5 - What is the maximum mass of carbohydrate in a 6-oz...Ch. 5 - A pint of premium ice cream can contain 1100...Ch. 5 - A serving of a breakfast cereal contains 3 g of...Ch. 5 - Which is the least expensive source of energy in...Ch. 5 - Explain how the heat measured in Example 5.5...Ch. 5 - Using the data in the check your learning section...Ch. 5 - Calculate the enthalpy of solution ( H for the...Ch. 5 - Calculate H for the reaction described by the...Ch. 5 - Calculate the enthalpy of solution ( H for the...Ch. 5 - Although the gas used in an oxyacetylene torch...Ch. 5 - How much heat is produced by burning 4.00 moles of...Ch. 5 - How much heat is produced by combustion of 125 g...Ch. 5 - How many moles of isooctane must be burned to...Ch. 5 - What mass of carbon monoxide must be burned to...Ch. 5 - When 2.50 g of methane burns in oxygen, 125 kJ of...Ch. 5 - How much heat is produced when loo mL of 0.250 M...Ch. 5 - A sample of 0.562 g of carbon is burned in oxygen...Ch. 5 - Before the introduction of chlorofluorocarbons,...Ch. 5 - Homes may be heated by pumping hot water through...Ch. 5 - Which of the enthalpies of combustion in Table 5.2...Ch. 5 - Does the standard enthalpy of formation of H2O(g)...Ch. 5 - Joseph Priestly prepared oxygen in 1774 by heating...Ch. 5 - How many kilojoules of heat will be released when...Ch. 5 - How many kilojoules of heat will be released when...Ch. 5 - The following sequence of reactions occurs in the...Ch. 5 - Both graphite and diamond burn....Ch. 5 - From the molar heats of formation in Appendix G,...Ch. 5 - Which produces more heat?...Ch. 5 - Calculate H298 for the process...Ch. 5 - Calculate H298 for the process...Ch. 5 - Calculate H for the process Hg2Cl2(s)2Hg(l)+Cl2(g)...Ch. 5 - Calculate H298 for the process...Ch. 5 - Calculate the standard molar enthalpy of formation...Ch. 5 - Using the data in Appendix G, calculate the...Ch. 5 - Using the data in Appendix G, calculate the...Ch. 5 - The following reactions can be used to prepare...Ch. 5 - The decomposition of hydrogen peroxide, H2O2, has...Ch. 5 - Calculate the enthalpy of combustion of propane,...Ch. 5 - Calculate the enthalpy of combustion of butane,...Ch. 5 - Both propane and butane are used as gaseous fuels....Ch. 5 - The white pigment TiO2 is prepared by the reaction...Ch. 5 - Water gas, a mixture of H2 and CO, is an important...Ch. 5 - In the early days of automobiles, illumination at...Ch. 5 - From the data in Table 5.2, determine which of the...Ch. 5 - The enthalpy of combustion of hard coal averages...Ch. 5 - Ethanol, C2H5OH, is used as a fuel for motor...Ch. 5 - Among the substances that react with oxygen and...Ch. 5 - How much heat is produced when 1.25 g of chromium...Ch. 5 - Ethylene, C2H2, a byproduct from the fractional...Ch. 5 - The oxidation of the sugar glucose, C6H12O6, is...Ch. 5 - Propane, C3H8, is a hydrocarbon that is commonly...Ch. 5 - During a recent winter month in Sheboygan,...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.Similar questions
- Synthesis of ZybanⓇ: 1. Write a mechanism for the bromination of m-chloropropiophenone. Br₂ CH2Cl2 Cl Br 2. Give the expected m/z (to a round number) for the molecular ion from the product above (including isotopic peaks). 3. What signals appeared/disappeared/shifted that indicate that you have your intended product and not starting material? What other impurities are present in your product and how do you know?arrow_forwardSynthesis of Ibuprofen-Part 2: 1. Some pain relievers including ibuprofen (MotrinⓇ) and naproxen (Aleve®) are "α-arylpropanoic acids." Look up the structure of naproxen (AleveⓇ), another a-arylpropionic acid. Using the same reactions that we used for making ibuprofen, show how to make naproxen from the compound below. Show all intermediates and reagents in your synthesis. Show how you would prepare ibuprofen starting from p-isobutylbenzene rather than p-isobutylacetophenenone. What reaction steps would need to change/add? 3. What signals appeared/disappeared/shifted that indicate that you have your intended product and not starting material? What other impurities are present in your product and how do you know?arrow_forwardAcid Catalyzed Aromatization of Carvone: 1. Starting with the ketone, below, draw a mechanism for the reaction to give the phenol as shown. H2SO4 HO- H₂O 2. Why do we use CDCl instead of CHCl, for acquiring our NMR spectra? 3. Why does it not matter which enantiomer of carvone is used for this reaction? What signals appeared/disappeared/shifted that indicate that you have your intended product and not starting material? What other impurities are present in your product and how do you know?arrow_forward
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