Chemistry: An Atoms-Focused Approach
14th Edition
ISBN: 9780393600681
Author: Gilbert
Publisher: W. W. Norton & Company
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- if you add NaPh to a solution of carbonic acid so that final ph is 5.0, which will be higher the concentration of the acid or the concentration of the conjugate base?
Which of the following statement best explain why the acidity of carboxylic acids is greater than those of the alcohols?
a. Alcohols behave as neutral compounds in aqueous solution.
b. Alcohol has the ability to donate proton to becomes a negative ion called an alkoxide ion, RO–
c. When a carboxylic acid donates its proton, it becomes a negatively charged ion, RCOO−, called a carboxylate ion which is more stabilized by resonance.
d. The OH group in alcohol is less charged and often more difficult to release electron for chemical reactions.
Amino acids can act as both Brønsted–Lowry acids and bases. The structure of the amino acid leucine (NH2CH(CH 2 CH(CH3) 2)COOH) is shown below.
a) What part of the structure allows leucine to act as a Brønsted–Lowry base? How do you know?
b) What is the conjugate acid of leucine? Either write the formula or sketch its structure.
c) What is the conjugate base of leucine? Either write the formula or sketch its structure.
Chapter 15 Solutions
Chemistry: An Atoms-Focused Approach
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