Statement-I: In aqueous solution, basic strength of CH32NH>CH33N>CH3NH2Statement-II: In aqueous solution, basic strength of C2H52NH>C2H53N>C2H5NH2
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a
Both statements I and II are correct
b
Statement-I is correct and statement-II is incorrect
c
Statement-I is incorrect and statement-II is correct
d
Both statements I and II are incorrect
answer is C.
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Detailed Solution
Basic strength of amines in aqueous solution depends on H-bonding, steric hindrance caused by alkyl groups and +I effect of alkyl groups. II) When -R is −C2H5 there is a steric hindrance to H-bonding. inductive effect plays a vital role. ∴R2NH>R3N>RNH2I) When -R is −CH3 there is no steric hindrance to H-bonding ∴CH32NH>CH3NH2>CH33N.