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) Unsubstituted amines are carbon-hydrogen-nitrogen compounds.
(2) Amides, like amines, exhibit basic properties in aqueous solution.
(3) In a quaternary ammonium ion, all four groups attached to the nitrogen atom are organic groups.
A) All three statements are true.
B) Two of the three statements are true.
C) Only one of the statements is true.
D) None of the statements is true.

Question

Quizplus · Accepted Answer

(1) TRUE – Unsubstituted amines are indeed carbon-hydrogen-nitrogen compounds.
(2) TRUE – Amides exhibit acidic properties in aqueous solution due to the presence of a carbonyl group.
(3) FALSE – In a quaternary ammonium ion, one or more of the four groups attached to the nitrogen atom may be inorganic (such as chloride, bromide, or iodide). Therefore, not all four groups are organic.

Since one of the statements (3) is false, choice D is eliminated. Since two of the statements (1 and 2) are true, choices A and C are eliminated. Thus, the correct answer is B.

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