how will you test the gas which is liberated when hydochloric acid reacts with a metal?
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The gas which is released when HCl (Hydrochloric Acid) reacts with a metal is Hydrogen gas (H₂).
HCl + M --------> MCl + ¹/₂ H₂
Now, Hydorgen gas by nature is a very good supporter of Combustion. Hence when a burning splinter, or a lighter is brought near it, there is a characteristic POP sound, indicating that the released gas in H₂.
Hope it helps!!
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