Advertisements
Advertisements
प्रश्न
Answer the following in brief :
Ammonia serves as a Lewis base whereas AlCl3 is Lewis acid. Explain.
Advertisements
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
Choose the most correct answer :
The conjugate base of [Zn(H2O)4]2⊕ is __________.
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?
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 |
The conjugate acid of \[\ce{HSO^-_4}\] is ____________.
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 ____________.
Conjugate base for Bronsted acids H2O and HF are ___________.
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.
Discuss the Lowry – Bronsted concept of acids and bases.
Identify the conjugate acid-base pair for the following reaction in an aqueous solution.
\[\ce{HS^-_{( aq)} + HF ⇌ F^-_{( aq)} + H2S_{(aq)}}\]
Identify the conjugate acid-base pair for the following reaction in an aqueous solution.
\[\ce{HPO^{2-}_4 + SO^{2-}_3 ⇌ PO^{3-}_4 + HSO^-_3}\]
Account for the acidic nature of HClO4 in terms of Bronsted – Lowry theory, identify its conjugate 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.
Name one amphoteric solvent.
Identify the conjugate acid - base pair in the following reaction.
\[\ce{H2O + HCl -> H3O+ + Cl-}\]
Which of the following species is amphoteric in nature?
The species which will behave both as conjugate acid and conjugate base is ______.
According to Lowry-Bronsted concept, base is a substance which acts as ______.
Calculate pH of 0.01 M NaOH.
Identify the conjugate acid-base pairs in the reaction,
\[\ce{CH3COOH(aq) + NH3(aq) <=> NH^+_4(aq) + CH3COO^-(aq)}\]
Define acids according to Bronsted-Lowry theory.
