First slide

Lewis theory

Question

R-I : ${NH}_{3} + {BF}_{3} \to H_{3} N \to {BF}_{3}$
R-II : ${NH}_{3} + H^{+} \to {NH}_{4}^{+}$
Correct statements about R-I and R-II are
A) NH₃is a Lewis base in both R-I and R-II
B) NH₃is a B-L base in both R-I and R-II
C) NH₃is a Lewis base only in R-I
D) NH₃is a Lewis base only in R-II
E) NH₃is a B-L base only in R-II
F) NH₃is a B-L base only in R-I

Moderate

A

A, B, C, D, E, F
B

A, E only
C

B, D only
D

A, C, D, F only

Solution

I) In R-I…. $\overset{. .}{N} H_{3}$ donates lone pair to BF₃ and thus acts like Lewis base. In this reaction NH₃ is not a proton acceptor. It is not a B-L base
II) In R-II… $\overset{. .}{N} H_{3}$ donates lone pair to H⁺ (proton) ;
It is an electron pair donar and a proton acceptor.Thus it acts like Lewis base and a B-L base.

Get Instant Solutions

When in doubt download our app. Now available Google Play Store- Doubts App

Recieve an sms with download link

Doubts App

OR

SCAN ME

Doubts App

Doubts App