Question

The ph of a solution is 4. With which of the following will it react.
a) CO2
b)Al2O3
c) H2O
d) CO

Answer 1

Answer:

Co2

Explanation:

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Answer 2

Answer:

b) Al2O3

Explanation:

The pH of solution is 4, i.e. Acidic. It will react with base.

CO2 and CO are oxides of non-metals that are acidic in nature. H2O is neutral. Al2O3 is metallic oxide which is amphoteric in nature i.e. can react with both acid or base.