Question

Write chemical equation for the following. (1) Aluminium come in contacts with air.

(2) Zinc oxide is disolved in dilute hydrocloric acid.
(3) A rection was brought about between feric oxide and aluminium.​

Answer 1

Answer:

al+02--->al2o3

zn+2hcl--->zncl2+h2

fe2o3+al---> al2o3+fe( single displacement)

Answer 2

Answer:

1) Aluminum came in contact with air. Aluminum is a very reactive metal. The outer surface of the metal is actually covered by a very thin layer of oxide which keeps the metal protected from the air. But when the oxide layer is damaged, aluminum comes in contact with the air.

2) Zinc Oxide is an inorganic compound with formula ZnO. It is insoluble in water. When Zinc oxide reacts with hydrochloric acid it forms zinc chloride and water. It also leads in the formation of small bubbles of hydrogen.

3) A reaction was brought about between ferric oxide and aluminium. The chemical formula of ferric oxide is Fe2O3 and aluminium is Al. The chemical reaction takes place between iron oxide and aluminium and forms aluminium oxide and iron. The heat released during the reaction.

Thank you =)