Answer to Question #265119 in Organic Chemistry for shelly

Question

The labels have fallen off three bottles. All three bottles (A, B, C) contain clear liquids. The labels indicate that one compound is an alkane, one is an alcohol, and one is an ester. Bottle A does not mix with water, while B & C do. Bottle B smells like pineapple, and A & C don’t have much of a smell at all. Which bottle contains which compound? Explain your answer using words and give reasons for your answer. 

Answer 1

2,4-Dinitrophenylhydrazine: Aldehydes and ketones react with 2,4-dinitrophenylhydrazine reagent to form yellow, orange, or reddish-orange precipitates, whereas alcohols do not react. Formation of a precipitate therefore indicates the presence of an aldehyde or ketone.