Test: Organic Chemistry

1.

An organic chemist carries out a reaction she believes will install a carboxylic acid functional group in her substrate. To verify the reaction worked, she measures the infrared (IR) spectrum of the compound. Which of the following absorption features would confirm the presence of a carboxylic acid?

A broad, strong band between 3300 and 2500 cm-1

A weak band between 1700 and 1500 cm-1

Several sharp, narrow bands between 3000 and 2850 cm-1

Several sharp, narrow bands between 3100 and 3000 cm-1

A weak, single band below 675 cm-1

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