Use the following to answer the questions below:
In each of the following multiple-choice questions, characterize EACH of the three given statements as being TRUE or FALSE and then indicate the collective true-false status of the statements using the choices:
-Statements: (1) "Pleasant odor" is a general characteristic of esters.
(2) Citric acid is both a tricarboxylic acid and a ketoacid.
(3) Esters and carboxylic acids with the same number of carbon atoms and the same degree of saturation are constitutional isomers.

Question

Quizplus · Accepted Answer

(1) is FALSE - While some esters may have pleasant odors, it is not a general characteristic of esters.
(2) is TRUE - Citric acid has three carboxylic acid groups and a ketone group, making it both a tricarboxylic acid and a ketoacid.
(3) is FALSE - Esters and carboxylic acids with the same number of carbon atoms and the same degree of saturation are not constitutional isomers because they have different functional groups. Therefore, only two of the three statements are true.

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