Question

a student was randomly given compounds i and f from the group of compounds below and asked to identify them according to their functional group. the student initially thought this to be easy, only to discover that he was embarking on some kind of herculean task. if you were to correctly advise the student, which test will be most appropriate to distinguish compounds i and f?

reaction with joness reagent
tollens test
bradys test (2,4 - dnp)
iodoform test
clear my selection
multiple choice 10 points

Explanation:

Step1: Identify key - functional groups

The task is to distinguish compounds based on functional groups. Tests are used to identify specific functional groups.

Step2: Analyze test suitability

Tollens' test is for aldehydes, iodoform test for methyl - ketones and some secondary alcohols, reaction with Jones' reagent for primary and secondary alcohols, and Brady's test (2,4 - DNP) for carbonyl compounds (aldehydes and ketones). Since the main task seems to be identifying carbonyl - containing compounds among a group of organic compounds, Brady's test (2,4 - DNP) is most appropriate as it gives a positive result for aldehydes and ketones which are common functional groups to distinguish in organic compounds.

Answer:

Brady's test (2,4 - DNP)