Advertisements
Advertisements
प्रश्न
Answer the following in brief :
Ammonia serves as a Lewis base whereas AlCl3 is Lewis acid. Explain.
उत्तर
i. According to Lewis's theory, an acid is a substance that can accept a share in an electron pair. In the AlCl3 molecule, the octet of Al is incomplete. Therefore, it can accept an electron pair to complete its octet. Hence, AlCl3 acts as a Lewis acid.
ii. According to Lewis's theory, a base is a substance that can donate an electron pair. In the ammonia (NH3) molecule, the nitrogen atom has one lone pair of electrons to donate. Hence, NH3 acts as a Lewis base.
APPEARS IN
संबंधित प्रश्न
Answer the following in one sentence :
Why cations are Lewis acids?
Answer the following in brief :
What is meant by conjugate acid-base pair?
Label the conjugate acid-base pair in the following reaction:
\[\ce{HCl + H2O ⇌ H3O\overset{\oplus} + Cl\overset{\ominus}{}}\]
For a reaction \[\ce{HCl_{(aq)} + H2O_{(l)} ⇌ H3O^+_{ (aq)} + Cl^-_{ (aq)}}\]
Which of the following is a conjugate acid-base pair?
Label the one conjugate acid-base pair in the following reaction.
\[\ce{CO^{2-}_{3(aq)} + H2O_{(l)} ⇌ OH^- + HCO^-_3}\]
Classify the following species into Lewis acids and Lewis bases.
| Cl- | |
| `"NH"_4^+` | |
| BCl3 | |
| NH3 |
Explain the amphoteric nature of water.
Which among the following compounds is used as selective weed killer?
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?
Which of these is not likely to act as Lewis base?
What are Lewis acids and bases? Give two examples for each.
Identify the conjugate acid-base pair for the following reaction in an aqueous solution.
\[\ce{HPO^{2-}_4 + SO^{2-}_3 ⇌ PO^{3-}_4 + HSO^-_3}\]
Identify the conjugate acid - base pair in the following reaction.
\[\ce{H2O + HCl -> H3O+ + Cl-}\]
Define conjugate acid-base pair.
What are the limitations of Arrhenium theory?
According to Lowry-Bronsted concept, base is a substance which acts as ______.
Vinegar contains ______.
Identify the conjugate acid-base pairs in the reaction,
\[\ce{CH3COOH(aq) + NH3(aq) <=> NH^+_4(aq) + CH3COO^-(aq)}\]
Define acids and bases according to Bronsted-Lowry theory.
