Rank the following compounds in order of increasing acidity,putting the least acidic first.
A)II

Question

Rank the following compounds in order of increasing acidity,putting the least acidic first. 
A)II < III < I < IV 
B)II < I < III < IV 
C)IV < III < I < II 
D)IV < I < II < III

Quizplus · Accepted Answer

The acidity of a compound is determined by its ability to donate a proton. In this case, compound I has a carboxylic acid functional group, which is the most acidic functional group among the given compounds. Compound II has an alcohol functional group, which is less acidic than carboxylic acid. Compound III has a phenol functional group, which is also less acidic than carboxylic acid but more acidic than alcohol because of the resonance stabilization of the conjugate base. Compound IV has a ketone functional group, which is the least acidic functional group among the given compounds. Therefore, the correct order of increasing acidity is II < I < III < IV.

Rank the Following Compounds in Order of Increasing Acidity,putting the Least