Control and Coordination
Concentrated and dilute are nothing burt the percentage of acid in water.
Dilute acid: A dilute acid solution contains only small amount of acid and a large amount of water.
Concentrated acid: A concentrated acid contains a large amount of acid and a small amount of water.
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Take 5 ml hydrochloric acid in a boiling tube or a conical flask. Add a few pieces of zinc granules to it.
(a) What do you observe on the surface of zinc granules?
(b) Name the gas evolved.
(c) What happens when the above gas is passed through soap solution?
(d) What happens when a burning candle is brought near the gas filled tube?
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