9. a. A metal is treated with dilute hydrochloric
acid in a test tube. A burning match stick is brought
near the mouth of the test tube, but no sound is
heard.
b. A container made of same metal when exposed to
humid climate develops green coating.
Identify the metal. Give reason for both a & b.
Answers
Answered by
6
Answer:
the metal is copper
Explanation:
the copper when left to envitoment a green coating are made in it
Answered by
9
Answer:
A pop sound is heard only when there is an evolution of hydrogen gas. But in a)this case the metal reacting with dilute hydrochloric acid did not produce any. Hence there was no pop sound.
b)The metal that the container was made up of was copper. It develops a green coating because of the mixture of copper hydroxide and copper carbonate.
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Explanation:
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