Identify the most and the least acidic compound in each of the following sets. Leave the remaining answer in each set blank. a) 2-chlorobutanoic acid: 4-chlorobutanoic acid: 3-chlorobutanoic acid: b) benzoic acid: formic acid: propanoic acid: c) p-cyanobenzoic acid: benzoic acid: p-aminobenzoic acid:

what are the statements

hydrocarbons are organic compounds that contain only hydrogens and carbons. they can be saturated (those which contain only carbon-carbon single bonds) or unsaturated (those which contain carbon-carbon double or triple bonds) in nature. hydrocarbons can undergo several reactions like substitution, elimination etc.  

on substituting one or more hydrogen atoms in hydrocarbon it results in the formation of haloalkane. as the halogen atoms are large compared to the carbon and hydrogen atoms, due to which the molecular weight increases and the bond become polar because of presence electronegative halogen atom and results in the increase in boiling point of the haloalkane.

thus, the correct option is (b) that is the boiling point of the new compound increases on substituting a hydrogen atom with a halogen in a hydrocarbon.