Advertisements
Advertisements
Question
What are Lewis acids and bases? Give two examples for each.
Advertisements
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 brief :
What are acids and bases according to Arrhenius theory?
Label the conjugate acid-base pair in the following reaction:
\[\ce{CO^2-_3 + H2O ⇌ OH- + HCO^-_3}\]
Answer the following in brief :
Ammonia serves as a Lewis base whereas AlCl3 is Lewis acid. Explain.
Explain the amphoteric nature of water.
Identify the conjugate acid-base pair for the following reaction in an aqueous solution.
\[\ce{NH^+_4 + CO^{2-}_3 ⇌ NH3 + HCO^-_3}\]
Name one amphoteric solvent.
Identify the conjugate acid - base pair in the following reaction.
\[\ce{H2O + HCl -> H3O+ + Cl-}\]
Define conjugate acid-base pair.
According to Lowry-Bronsted concept, base is a substance which acts as ______.
Define acids according to Bronsted-Lowry theory.
