Question

Among the following, which arrangement gives the correct increasing order of basicity?

• A. $OH ^{-}< { }^{-} OCH _3< { }^{-} CH = CH _2< { }^{-} NH _2$
• B. ${ }^{-} C \equiv CH <{ }^{-} NH _2< { }^{-} CH = CH _2< { }^{-} CH _2 CH _3$
• C. ${ }^{-} OH < { }^{-} NH _2< { }^{-} CH _2- CH _3< { }^{-} OC _2H _5$
• D. ${ }^{-} OC _2 H _5< OH ^{-}< { }^{-} C \equiv CH < { }^{-} OC _6 H _5$

Answer 1

Answer: (B)

As electronegativity of element increases, acidic strength increases and basic strength of conjugate base is inversely proportional to acidic strength.