Advertisements
Advertisements
Question
Explain the amphoteric nature of water.
Solution
Water has the ability to act as an acid as well as a base. Such behaviour is known as amphoteric nature of water.
e.g.
\[\ce{\underset{\text{(Acid)}}{H2O_{(l)}} + NH_{3(aq)} <=> OH^-_{ (aq)} + NH^+_{ 4(aq)}}\]
\[\ce{\underset{\text{(Base)}}{H2O_{(l)}} + HCl_{(aq)} <=> H3O^+_{ (aq)} + Cl^-_{ (aq)}}\]
H2O acts as an acid towards NH3 and as a base towards HCl.
Therefore, H2O is amphoteric.
APPEARS IN
RELATED QUESTIONS
Choose the most correct answer :
The conjugate base of [Zn(H2O)4]2⊕ is __________.
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 :
Write a reaction in which water acts as a base.
Answer the following in brief :
Ammonia serves as a Lewis base whereas AlCl3 is Lewis acid. Explain.
Label the one conjugate acid-base pair in the following reaction.
\[\ce{CO^{2-}_{3(aq)} + H2O_{(l)} ⇌ OH^- + HCO^-_3}\]
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.
\[\ce{HS^-_{( aq)} + HF ⇌ F^-_{( aq)} + H2S_{(aq)}}\]
Name one amphoteric solvent.
Omeoprazole and lansoprazole are used as ______.
Which of the following species is amphoteric in nature?
The species which will behave both as conjugate acid and conjugate base is ______.
Define conjugate acid-base pair.
What are the limitations of Arrhenium theory?
Calculate pH of 0.01 M NaOH.
Vinegar contains ______.
Identify the conjugate acid-base pairs in the reaction,
\[\ce{CH3COOH(aq) + NH3(aq) <=> NH^+_4(aq) + CH3COO^-(aq)}\]
