Organic Chemistry
7th Edition
ISBN: 9780321803221
Author: Paula Y. Bruice
Publisher: Prentice Hall
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Textbook Question
Chapter 14.21, Problem 39P
a. At pH = 7 one of the ions shown here is purple and the other is blue. Which is which? (Hint: refer to the color spectrum in figure 13.8 on page 584.)
b. What would be the difference in the colors or the compounds at pH = 3?
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3. The pH of blood is buffered by a mixture of HCO3- (bicarbonate) and H2CO3 (carbonic acid).i. Write out an equation that shows a reaction of H+ with HCO3-iii. Recall that H2CO3 (aq) decomposes readily. Write a chemical equation to describe this decomposition.
The pH of blood is buffered by a mixture of HCO3- (bicarbonate) and H2CO3 (carbonic acid).
Write out an equation that shows a reaction of H+ with HCO-3.
Recall that H2CO3 (aq) decomposes readily. Write a chemical equation to describe this decomposition.
Consider your response to the last question and explain how bicarbonate and carbonic acid are generated by the dissolving of CO2 in water (Hint: The reaction for “ii” is reversible.)
23. lodide ion (1) is the conjugate base of hydroiodic acid (HI). Why doesn't sodium iodide cause an
appreciable increase in the pH of water when it dissolves into Na* and I ions?
(a) The Na' is acidic and neutralizes the basicity of I
(b) It is a stronger acid than it is a base in water, so Nal actually lowers the pH when dissolved.
(c) There are no H₂O* ions present in the solution that could react with I.
(d) At least a small amount of HI must be present in order for I to act as a base to raise the pH.
(e) HI is a strong acid that reacts completely, which makes I a correspondingly weak base.
24. K, for methylamine (CH3NH₂) is the equilibrium constant for which reaction?
(a) CHÍNH, + HO
- CHÍNH + HO
CH₂NH3 + OH*
= CHÍNH + H2O
CH₂NH™ + H₂O
(b) CH₂NH₂ + H₂O
(C) CHÍNH, + HO
(d) CH₂NH₂ + OH
(e) None of the above
Consider the titration of 50.0 mL 0.1250 M KOH with 0.07500 HClO4 M.
a. Write the balanced reaction which occurs during the titration:Reaction:
b. Determine the pH of the solution before the titration begins.
c. Determine the pH of the solution after the addition of 40.0mL acid.
d. Determine the pH of the solution at the equivalence point.
e. Determine the pH of the solution after 125.0mL acid has been added.
Chapter 14 Solutions
Organic Chemistry
Ch. 14.1 - Which of the following fragments produced in a...Ch. 14.2 - What distinguishes the mass spectrum of...Ch. 14.2 - What is the most likely m/z value for the base...Ch. 14.3 - Prob. 5PCh. 14.3 - If a compound has a molecular ion with an...Ch. 14.3 - a. Suggest possible molecular formulas for a...Ch. 14.3 - Identify the hydrocarbon that has a molecular ion...Ch. 14.4 - Predict the relative intensities of the molecular...Ch. 14.5 - Which molecular formula has an exact molecular...Ch. 14.5 - Prob. 11P
Ch. 14.6 - Sketch the mass spectrum expected for...Ch. 14.6 - The mass spectra of 1-methoxybutane,...Ch. 14.6 - Prob. 14PCh. 14.6 - Identify the ketones responsible for the mass...Ch. 14.6 - Prob. 16PCh. 14.6 - Using curved arrows, show the principal fragments...Ch. 14.6 - The reaction of (Z)-2-pentene with water and a...Ch. 14.9 - Prob. 19PCh. 14.9 - Prob. 20PCh. 14.9 - Prob. 21PCh. 14.13 - Prob. 22PCh. 14.14 - Which occur at a larger wavenumber: a. the C O...Ch. 14.14 - Prob. 24PCh. 14.14 - Prob. 25PCh. 14.14 - Rank the following compounds from highest...Ch. 14.14 - Which shows an O H stretch at a larger...Ch. 14.15 - Prob. 28PCh. 14.15 - a. An oxygen-containing compound shows an...Ch. 14.15 - Prob. 30PCh. 14.15 - For each of the following pair of compounds, name...Ch. 14.16 - Which of the following compounds has a vibration...Ch. 14.16 - Prob. 33PCh. 14.17 - A compound with molecular formula C4H6O gives the...Ch. 14.19 - Prob. 35PCh. 14.19 - Prob. 36PCh. 14.20 - Predict the max of the following compound:Ch. 14.20 - Prob. 38PCh. 14.21 - a. At pH = 7 one of the ions shown here is purple...Ch. 14.21 - Prob. 40PCh. 14.22 - Prob. 41PCh. 14.22 - Prob. 42PCh. 14 - In the mass spectrum of the following compounds,...Ch. 14 - Prob. 44PCh. 14 - For each of the following pairs of compounds,...Ch. 14 - Draw structures for a saturated hydrocarbon that...Ch. 14 - a. How could you use IR spectroscopy to determine...Ch. 14 - Assuming that the force constant is approximately...Ch. 14 - In the following boxes, list the types of bonds...Ch. 14 - A mass spectrum shows significant peaks at m/z. =...Ch. 14 - Prob. 51PCh. 14 - Prob. 52PCh. 14 - Prob. 53PCh. 14 - How can you use UV spectroscopy to distinguish...Ch. 14 - Rank the following compounds from highest...Ch. 14 - Rank the following compounds from highest...Ch. 14 - What peaks in their mass spectra can be used to...Ch. 14 - Each of the IR spectra shown below is accompanied...Ch. 14 - Prob. 59PCh. 14 - Prob. 60PCh. 14 - How can IR spectroscopy distinguish between...Ch. 14 - 62. Draw the structure of a carboxylic acid that...Ch. 14 - Prob. 63PCh. 14 - Give approximate wavenumbers for the major...Ch. 14 - Prob. 65PCh. 14 - Prob. 66PCh. 14 - Prob. 67PCh. 14 - The IR spectrum of a compound with molecular...Ch. 14 - Which one of the following live compounds produced...Ch. 14 - Prob. 70PCh. 14 - Phenolphthalein is an acid-base indicator. In...Ch. 14 - Which one of the following five compounds produced...Ch. 14 - The IR and mass spectra for three different...
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