w_acid_1 - Exam Name_ MULTIPLE CHOICE. Choose the one...

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Exam Name___________________________________ MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question 1) Carboxylic acids boil at considerably higher temperatures than do alcohols, ketones, or aldehydes of similar molecular weights. This is because they: A) form stable hydrogen - bonded dimers. B) are hydrophobic. C) are more acidic. D) have a greater oxygen content. E) none of the above. 1) SHORT ANSWER. Write the word or phrase that best completes each statement or answers the question. 2) Are carboxylic acids of more than 10 carbons more soluble in polar or nonpolar solvents? 2) MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question 3) Which of the following is the strongest acid? A) chloroacetic acid B) fluoroacetic acid C) bromoacetic acid D) acetic acid 3) 4) Which of the following is the strongest acid? A) dichloroacetic acid B) trichloroacetic acid C) chloroacetic acid D) acetic acid 4) SHORT ANSWER. Write the word or phrase that best completes each statement or answers the question. 5) Draw an acetic acid dimer. Be sure to indicate the hydrogen bonds present. 5) MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question 6) At pH 4.5, which of the following acids would be most dissociated? A) octanoic acid (pK a = 4.89) B) p - nitrobenzoic acid (pK a = 3.41) C) acetic acid (ethanoic acid) (pK a = 4.74) D) hexanoic acid (pK a = 4.88) E) water 6) SHORT ANSWER. Write the word or phrase that best completes each statement or answers the question. 7) What products result from the reaction of sodium propanoate with hydrobromic acid? 7) ESSAY. Write your answer in the space provided or on a separate sheet of paper. 8) What salt results from the reaction of benzoic acid with potassium hydroxide? 9) Name the salt formed from the reaction of acetic acid with ammonia. 1
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MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question 10) An unknown compound is insoluble in water but dissolves in sodium bicarbonate with a release of carbon dioxide bubbles. The compound is almost certainly: A) an aldehyde B) a carboxylic acid C) an amine D) an alcohol E) an alkyl chloride 10) ESSAY. Write your answer in the space provided or on a separate sheet of paper. 11) Using acid - base extractions, how might you purify a crude sample of benzoic acid? 12) What two features are prominent in the infrared spectrum of a carboxylic acid? MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question 13) Where would one expect to find the 1 H NMR signal for the carboxyl group's hydrogen in propanoic acid? A) δ 10
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w_acid_1 - Exam Name_ MULTIPLE CHOICE. Choose the one...

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