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Take 5 ml hydrochloric acid in a glass beaker add few pieces of zinc granules to it what do you observe on the surface of the zinc granules name the gas evolved what happens when a burning candle is brought near the gas field beaker.
Take 5 ml hydrochloric acid in a glass beaker add few pieces of zinc granules to it what do you observe on the surface of the zinc granules name the gas evolved what happens when a burning candle is brought near the gas field beaker.
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Explanation:
When dilute hydrochloric acid is added to granulated zinc placed in a test tube, a colourless and odourless gas is evolved with bubbles.
The chemical reaction can be written as:
Zn + 2HCl → ZnCl
2
+ H
2
We can observe that there are effervescence on the surface of the zinc granules.
The gas evolved is Hydrogen gas.
When candle is brought near the gas field gas bubbles pop sound due to burning of hydrogen gas.