Advertisements
Advertisements
Question
What are Lewis acids and bases? Give two examples for each.
Solution
1. Lewis acids:
- Lewis acid is a species that accepts an electron pair.
- Lewis acid is a positive ion (or) an electron deficient molecule.
- Example, Fe2+, CO2, BF3, SiF4 etc.
2. Lewis bases:
- Lewis base is a species that donates an electron pair.
- Lewis base is an anion (or) neutral molecule with atleast one lone pair of electrons.
- Example, NH3, F–, CH2 = CH2, CaO etc.
APPEARS IN
RELATED QUESTIONS
Answer the following in one sentence :
Why cations are Lewis acids?
Answer the following in brief :
What are acids and bases according to Arrhenius theory?
Answer the following in brief :
What is meant by conjugate acid-base pair?
In which oxidation state, group 15 elements act as Lewis base?
According to the Bronsted-Lowry theory, an acid is a substance that ____________.
Which of the following fluro compounds is most likely to behave as a Lewis base?
When aqueous ammonia is added to CuSO4 solution, the solution turns deep blue due to the formation of tetramminecopper (II) complex, \[\ce{[Cu(H2O)6]^{2+}_{( aq)} + 4NH3_{( aq)} ⇌ [Cu(NH3)4]^{2+}_{( aq)}}\], among HO2 and NH3 Which is stronger Lewis base.
Identify the conjugate acid - base pair in the following reaction.
\[\ce{H2O + HCl -> H3O+ + Cl-}\]
The species which will behave both as conjugate acid and conjugate base is ______.
Define acids and bases according to Bronsted-Lowry theory.
