Acid strength is inversely proportional to conjugate base strength.
• Strong acids fully dissociate, yielding stable conjugate bases with minimal proton affinity. This confirms that stronger acids lead to weaker conjugate bases.
• The pKa value indicates acid strength; a higher pKa signifies a weaker acid. Consequently, a higher pKa corresponds to a weaker acid and thus a stronger conjugate base. Therefore, a larger pKa for the conjugate acid indicates a stronger base.
Consider the following compounds:
(i) CH₃CH₂Br
(ii) CH₃CH₂CH₂Br
(iii) CH₃CH₂CH₂CH₂Br
Arrange the compounds in the increasing order of their boiling points.
Assertion (A): The boiling points of alkyl halides decrease in the order: RI>RBr>RCl>RF.
Reason (R): The boiling points of alkyl chlorides, bromides and iodides are considerably higher than that of the hydrocarbon of comparable molecular mass.
Arrange the following compounds in increasing order of their boiling point: \[ \text{(CH}_3\text{)}_2\text{NH, CH}_3\text{CH}_2\text{NH}_2, \text{CH}_3\text{CH}_2\text{OH} \]