Essential Organic Chemistry (3rd Edition)
3rd Edition
ISBN: 9780321937711
Author: Paula Yurkanis Bruice
Publisher: PEARSON
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Textbook Question
Chapter 8, Problem 66P
The pKa of acetic acid in water is 4.76. What effect would a decrease in the polarity of the solvent have on the pKa? Why?
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Chapter 8 Solutions
Essential Organic Chemistry (3rd Edition)
Ch. 8.1 - Prob. 2PCh. 8.1 - Does increasing the energy barrier for an SN2...Ch. 8.1 - Arrange the following alkyl bromides in order from...Ch. 8.2 - Prob. 7PCh. 8.2 - Which reaction in each of the following pairs...Ch. 8.2 - Prob. 9PCh. 8.2 - Prob. 11PCh. 8.3 - Draw the substitution products that will be formed...Ch. 8.4 - Arrange the following alkyl halides in order from...Ch. 8.5 - Prob. 14P
Ch. 8.5 - Which of the following reactions will go faster if...Ch. 8.6 - After a proton is removed from the OH group, which...Ch. 8.6 - Draw the product of each of the following...Ch. 8.9 - Prob. 20PCh. 8.9 - Prob. 21PCh. 8.11 - Why do the SN1/E1 reactions of tertiary alkyl...Ch. 8.11 - Prob. 23PCh. 8.11 - Prob. 24PCh. 8.12 - Prob. 25PCh. 8.12 - Prob. 26PCh. 8.12 - Prob. 27PCh. 8.12 - a In which solvent would tert-butyl bromide...Ch. 8.13 - What would be the best way to prepare the...Ch. 8 - Methoxychlor is an insecticide that was intended...Ch. 8 - Prob. 31PCh. 8 - Prob. 32PCh. 8 - Prob. 33PCh. 8 - Prob. 34PCh. 8 - Prob. 35PCh. 8 - Prob. 36PCh. 8 - Explain how the following changes would affect the...Ch. 8 - Prob. 38PCh. 8 - Draw the major product obtained when each of the...Ch. 8 - Which alkyl halide in Problem 39 can undergo an El...Ch. 8 - Prob. 42PCh. 8 - Prob. 43PCh. 8 - Prob. 44PCh. 8 - Prob. 45PCh. 8 - Starting with bromocyclohexane, how could the...Ch. 8 - Prob. 48PCh. 8 - Fill in the blanks in the following chemical...Ch. 8 - For each of the following alkyl halides, indicate...Ch. 8 - Prob. 51PCh. 8 - a. Explain why 1-bromo-2,2-dimethylpropane has...Ch. 8 - An ether can be prepared by an SN2 reaction of an...Ch. 8 - Give two sets of reactants (each set including an...Ch. 8 - Show how the following compounds could be...Ch. 8 - Prob. 56PCh. 8 - Prob. 57PCh. 8 - Draw the structures of the products obtained from...Ch. 8 - cis-4-Bromocyclohexanol and...Ch. 8 - Prob. 60PCh. 8 - Prob. 61PCh. 8 - Prob. 62PCh. 8 - Prob. 63PCh. 8 - In which solventethanol or diethyl etherwould the...Ch. 8 - The pKa of acetic acid in water is 4.76. What...
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- The pKa values of the carboxylic acid groups of oxaloacetic acid are 2.22 and 3.98. a. Which carboxyl group is the stronger acid? b. The amount of hydrate present in an aqueous solution of oxaloacetic acid depends on the pH of the solution: 95% at pH 0, 81% at pH 1.3, 35% at pH 3.1, 13% at pH 4.7, 6% at pH 6.7, and 6% at pH 12.7. Explain this pH dependence.arrow_forwardTwo pKa values are reported for malonic acid, a compound with twoCOOH groups. Explain why one pKa is lower and one pKa is higher thanthe pKa of acetic acid (CH3COOH, pKa = 4.8).arrow_forwardProvide an explanation without using the pka values : Why is phenol stronger acid than butanoic acid?arrow_forward
- The pKa values of the carboxylic acid groups of oxaloacetic acid are 2.22 and 3.98.a. Which carboxyl group is the stronger acid?b. The amount of hydrate present in an aqueous solution of oxaloacetic acid depends on the pH of the solution: 95% at pH 0, 81% at pH 1.3, 35% at pH3.1, 13% at pH 4.7, 6% at pH 6.7, and 6% at pH 12.7. Explain this pH dependence.arrow_forwardWhat is the pKa of a weak acid with a Ka of 4.7 X 10-6?arrow_forwardWhat is the lowest pH buffer that could effectively be made with a weak acid that has a pK a of 5.418?arrow_forward
- Calculate the pH of 1.25x10^-2 M of the decongestantephedrine hydrochloride if the pKb of ephedrine (itsconjugate base) is 3.86.arrow_forwardMost of the pKa values given in this text were determined in water. How would the pKa values of carboxylic acids, alcohols, ammonium ions (RN+H3) , phenol, and an anilinium ion (C6H5N+H3) + change if they were determined in a solvent less polar than waterarrow_forwardCarnosine, found in muscle and brain tissue, acts as a buffer to neutralize small amounts of acid. The pKa of the conjugate acid of carnosine is close to 7.0. What is its structure?arrow_forward
- Find the pH of 0.051 M trimethylammomium chloride solution given a pKa of 9.799 for the trimethylammonium ion.arrow_forwardWhy is the pKa value of protonated hydroxylamine (6.0) so much lower than the pKa value of a protonated primary amine such as protonated methylamine (10.7)?arrow_forwardConsider the properties of sodium carbonate (Na2CO3), potassium carbonate (K2CO3), andsodium hydroxide (NaOH). How do they differ by pKa? Nucleophilicity? Solubility?arrow_forward
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