The oxide of a metal ‘A’ (used to
make utensils) reacts with both
acids and bases to form salt and
water.
a. Name the metal ‘A’
b. What is the name given to such
oxides?
c. Write the chemical equation for
the reaction when exposed to air
and when the product is dissolved
in water.
Answers
Answer:
The oxide of some metal can react with both acid and base to form salt and water.
To react with both acid and base, is a character of an amphoteric oxide.
An amphoteric oxide is an oxide which can react with both acids as well as bases to produce salt and water.
The two most common amphoteric oxides known are aluminium oxide and zinc oxide.
As it is given that the metal is used to make utensils.
Hence, a. Aluminium, as it is an amphoteric oxide as well as is used in making utensils.
b. The name given to two such oxides is "amphoteric oxides."
c. The equation equation when the metal reacts with oxygen in air is is:-
4Al + 3O2 —> 2Al2O3
The reaction when product is dissolved in water is:-
Al2O3 + H2O —> No reaction
Answer:
Magnesium oxide
Explanation:
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