Use app×
Join Bloom Tuition
One on One Online Tuition
JEE MAIN 2025 Foundation Course
NEET 2025 Foundation Course
CLASS 12 FOUNDATION COURSE
CLASS 10 FOUNDATION COURSE
CLASS 9 FOUNDATION COURSE
CLASS 8 FOUNDATION COURSE
0 votes
4.4k views
in Ionic Equilibrium by (48.5k points)
closed by

Differentiate Lewis acids and Lewis bases.

1 Answer

+1 vote
by (43.7k points)
selected by
 
Best answer

Lewis Acids 

1. Lewis acids are substances that can accept one or more lone pair of electrons. 

2. All metal ions (or) atoms can act as Lewis acids. Examples: Fe2+ , Fe3+ , Cu2+ , Cr3+ 

3. Molecules that contain a polar double bond can act as Lewis acids. Examples: SO2 , CO2 , SO

4. Molecules in which the central atom can expand its act due to the availability of empty d-orbitais can act as Lewis acid. Example: SiF4 , SF4 , FeCI3 

5. Carbonium ion (CH3)3C+ can act as Lewis acid 

6. Electron deficient molecules such as BF3 , AlCl3 , BeF2 act as Lewis acid (electron pair acceptors).

Lewis Bases 

1. Lewis bases are substances that can donate one or more lone pair of electrons. 

2. All anions can act as Lewis bases. Examples: F- , Cl- , CN- , SO42- 

3. Molecules that contain carbon-carbon multiple bond. Example: CH2 = CH2 , CH = CH 

4. All metal oxides can act as Lewis bases. Examples : CaO, MgO, Na2

5. CH2- carbanion cari act as Lewis acid 

6. Electron rich molecules such as NH3 , H2O, ROH, R – O – R, R – NH2 act as Lewis base (Electron pair donors)

Welcome to Sarthaks eConnect: A unique platform where students can interact with teachers/experts/students to get solutions to their queries. Students (upto class 10+2) preparing for All Government Exams, CBSE Board Exam, ICSE Board Exam, State Board Exam, JEE (Mains+Advance) and NEET can ask questions from any subject and get quick answers by subject teachers/ experts/mentors/students.

...