Question

CONCEPT TEST Identify the following compounds as acids or bases or neither in water. If the com- pound is an acid or base, identify it as weak or strong. (a) CH3CH2COOH; (b) CH3OH; (c) (CH3CH2)2NH; (d) HNO3 (Answers to Concept Tests are in the back of the book.) CONCEPT TEST A molecule called EDTA has four carboxylic acid groups and hence four acidic protons. We can symbolize it as H4E to highlight this property. Pick the more acidic member of each pair listed: (a) H2E2- or HE3-; (b) H4E or H3E". (Answers to Concept Tests are in the back of the book.)

Answer 1

CH3CH2COOH is a weak acid, CH3OH is neither an acid nor base, (CH3CH2)2NH is a weak base, and HNO3 is a strong acid. Among pairs, HE3- and H4E are more acidic.

Step-by-step explanation:

The chemical compounds can be identified as acids, bases or neutral based on the presence or absence of certain functional groups. (a) CH3CH2COOH is a weak carboxylic acid ((acetic acid). (b) CH3OH(methanol) is neither an acid nor a base. (c) (CH3CH2)2NH (diethylamine), with its nitrogen atom, is a weak base. (d) HNO3 (nitric acid) is a strong acid in water.

In regards to the more acidic member of each pair: (a) HE3- is more acidic than H2E2- , (b) H4E is more acidic than H3E-.

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