Which two sets of reactants best represent th | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(B) Amphoteric substances react with both acids and bases.$Zn(OH)_2$ acts as an acid when reacting with a base:$Zn(OH)_{2(s)} + 2OH^{-}_{(aq)} \longri

Vedclass · Accepted Answer

$1$ and $3$

Vedclass · Answer

(B) Amphoteric substances react with both acids and bases.$Zn(OH)_2$ acts as an acid when reacting with a base:$Zn(OH)_{2(s)} + 2OH^{-}_{(aq)} \longrightarrow [Zn(OH)_4]^{2-}_{(aq)}$ (or $ZnO_2^{2-} + 2H_2O$)$Zn(OH)_2$ acts as a base when reacting with an acid:$Zn(OH)_{2(s)} + 2H^{+}_{(aq)} \longrightarrow Zn^{2+}_{(aq)} + 2H_2O_{(l)}$Therefore,Set $1$ and Set $3$ represent the amphoteric nature of $Zn(OH)_2$.

Which two sets of reactants best represent the amphoteric character of $Zn(OH)_2$?
Set $1$ : $Zn(OH)_{2(s)}$ and $OH^{-}_{(aq)}$
Set $2$ : $Zn(OH)_{2(s)}$ and $H_2O_{(l)}$
Set $3$ : $Zn(OH)_{2(s)}$ and $H^{+}_{(aq)}$
Set $4$ : $Zn(OH)_{2(s)}$ and $NH_{3(aq)}$

Similar Questions

When ammonia is added to water,which of the following ions is responsible for the increase in its basicity (or decrease in $H_3O^+$ concentration)?

What do you understand by the term 'auto-protolysis' of water? What is its significance?

Among the following,the weakest Lewis base is

Four species are listed below:
$i. \, HCO_3^-$
$ii. \, H_3O^{+}$
$iii. \, HSO_4^-$
$iv. \, HSO_3F$
Which one of the following is the correct sequence of their acid strength?

$H^{+}$ is a

Vedclass Test Series

Exam Paper Generator

Online Exam Module

Which two sets of reactants best represent the amphoteric character of $Zn(OH)_2$?Set $1$ : $Zn(OH)_{2(s)}$ and $OH^{-}_{(aq)}$Set $2$ : $Zn(OH)_{2(s)}$ and $H_2O_{(l)}$Set $3$ : $Zn(OH)_{2(s)}$ and $H^{+}_{(aq)}$Set $4$ : $Zn(OH)_{2(s)}$ and $NH_{3(aq)}$