s-Block ElementsHard
Question
The pair of amphoteric hydroxides is :
Options
A.Be(OH)2, Al(OH)3
B.Al(OH)3, LiOH
C.B(OH)3, Be(OH)2
D.Be(OH)2, Mg(OH)2
Solution
Beryllium hydroxide and aluminium hydroxide are amphoteric in nature on account of diagonal relationship.
Be(OH)2 + 2OH- → [Be(OH)4]2- (beryllate ion). ; Be(OH)2 + 2HCl + 2H2O → [Be(OH2)4]Cl2.
Al(OH)3 + OH- → [Al(OH)4]- (aluminate ion).
Al(OH)3 + H2O + 3HCl → [Al(OH2)4]Cl3.
Be(OH)2 + 2OH- → [Be(OH)4]2- (beryllate ion). ; Be(OH)2 + 2HCl + 2H2O → [Be(OH2)4]Cl2.
Al(OH)3 + OH- → [Al(OH)4]- (aluminate ion).
Al(OH)3 + H2O + 3HCl → [Al(OH2)4]Cl3.
Create a free account to view solution
View Solution FreeMore s-Block Elements Questions
Select the correct statement....Which one of the following alkaline earth metal sulphates has its hydration enthalpy greater than its lattice enthalpy ?...The molecular formula of plaster of pairs is :...Which of the following has the highest reactivity towards water ?...Lithium is stronger reducing agent than sodium due to :...