Aspirin that has been stored for a long time may give a vinegar odor and give a purple color with fecl3. what reaction would cause this to happen

Reaction of phenol with FeCl3 would give a purple color

Explanation:

Aspirin is essentially 2-acetoxy salicylic acid. Thus the chemical structure comprises a benzene ring along with 2 functional groups: a carboxylic acid (-COOH) and a acetoxy (-OCOCH3) group.

Hydrolysis of aspirin results in the cleavage of the acetoxy group to form CH3COOH acetic acid which gives a vinegar odor. Additionally this creates a phenolic structure (phenol group) which reacts with FeCl3 to give a purple color.

the answer

explanation:

the capillary tube was too close to the bottom of the beaker.

the ruler may have moved.

water got into the capillary tube.

the temperature was not allowed to equilibrate in the 2-4 minutes.

air quality

poor drinking water

and heavy polution

can lead to poor health