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

Question

Among the following, which arrangement gives the correct increasing order of basicity? (A) OH -< - OCH 3< - CH = CH 2< - NH 2 (B)  - C ≡ 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 ≡ CH < - OC 6 H 5

Tardigrade Admin · Accepted Answer

As electronegativity of element increases, acidic strength increases and basic strength of conjugate base is inversely proportional to acidic strength. <img class="img-fluid question-image" alt="Solution" src="https://cdn.tardigrade.in/q/nta/c-xiymkjvks7xcdsrb.jpg" />

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

$O H^{-} <^{-} OC H_{3} <^{-} C H = C H_{2} <^{-} N H_{2}$

$^{-} C \equiv C H <^{-} N H_{2} <^{-} C H = C H_{2} <^{-} C H_{2} C H_{3}$

$^{-} O H <^{-} N H_{2} <^{-} C H_{2} - C H_{3} <^{-} O C_{2} H_{5}$

$^{-} O C_{2} H_{5} < O H^{-} <^{-} C \equiv C H <^{-} O C_{6} H_{5}$

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

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

OH−<−OCH3​<−CH=CH2​<−NH2​

−C≡CH<−NH2​<−CH=CH2​<−CH2​CH3​

−OH<−NH2​<−CH2​−CH3​<−OC2​H5​

−OC2​H5​<OH−<−C≡CH<−OC6​H5​

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

$O H^{-} <^{-} OC H_{3} <^{-} C H = C H_{2} <^{-} N H_{2}$

$^{-} C \equiv C H <^{-} N H_{2} <^{-} C H = C H_{2} <^{-} C H_{2} C H_{3}$

$^{-} O H <^{-} N H_{2} <^{-} C H_{2} - C H_{3} <^{-} O C_{2} H_{5}$

$^{-} O C_{2} H_{5} < O H^{-} <^{-} C \equiv C H <^{-} O C_{6} H_{5}$