a. The reaction of metal E with ferric oxide is hightly exothermic. Metal E is obtained from its oxides by electrolytic reduction. Identify metal E and write its reaction with ferric oxide.
b. Give a reason to justify that aliminium is an amphoteric oxide. Also give another example of an amphoteric oxide.

Explanation

a. E is aluminium.
`2Al+Fe2O_(3)to Al_(2)O_(3)+2Fe+` heat
b. Aluminium oxide reacts with both acids and bases to undergo neutralization reaction.
`Al_(2)O_(3)+6HClto2AlCl_(3)+3H_(2)O`
`Al_(2)O_(3)+NaOHto2NaAlO_(2)+H_(2)O`
Zinc oxide is also an amphoteric oxide.