Question

(b) Write any two reactions to justify the amphoteric nature of aluminium ? (2)

Answer 1

Hey....✌



◆Reaction of aluminum with acid

Al + HCl ---- AlCl3 + H2


◆ Reaction of aluminum with base

Al + NaOH --- NaAlO2 + H2



●✴ In both the reactions formation of salta ans evolution of hydrogen gas took place . ●✴

Answer 2

Hi.

@@@@---Amphoteric nature-----
The nature of the elements by which they can react with acids as well as bases is called as amphoteric nature.
For example---- Lead, Aluminium, Zinc posses Amphoteric nature.

The two reactions to justify the Amphoteric nature of Aluminium are----
 
@---      2Al + 2NaOH+ 2H20------------------------ 2NaAlO2  +  3H2

 @ ------  Al2O3 + 2NaOH -------------------------  2NaAlO2 + H20

Hope it will help u.

Have a nice day.

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