The increasing order of pKb values of the following compounds is : (A) II < I < III < IV (B) II < IV — JEE Mains Chemistry Past Papers Chemistry Question

💡 Solution & Explanation

) K ( strength Basic PK b b  Kb  +I, +M effect (e– density) effect M ,I Kb    Kb = 1 > 2 > 4 > 3 | JEE MAIN-2020 | DATE : 06-09-2020 (SHIFT-1) | PAPER-1 | OFFICIAL PAPER | CHEMISTRY PAGE # 2 PKb = 1 < 2 < 4 < 3 (I) CH3 N(CH3)2 +I, +HC (II) N(CH3)2 O (III) CN N(CH3)2 –I Strong (IV) OH N(CH3)2 –I (Weak)