How will you test for the gas which is liberated when hydrochloric acid reacts with an active metal?

Monjur Alahi

How will you test for the gas which is liberated when hydrochloric acid reacts with an active metal?


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Salim Ahmed Kawsar

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When an active rnetal like Zn reacts with HCl, the gas produced burns with a pop sound which indicates that it is hydrogen gas.

 Zn(s) + 2HCl(aq) -----> ZnCl2(s)+ H2(g)

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Salim Ahmed Kawsar

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Bring a burning matchstick near the gas. It burns with ‘pop’ sound showing that it is hydrogen.

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Salim Ahmed Kawsar

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An active metal reacts with hydrochloric acid to give hydrogen gas. When a burning splinter is brought close to the gas evolved, pop sound is produced and the gas continues to burn.

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Salim Ahmed Kawsar

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The gas liberated is hydrogen and it can be tested by taking a burning match stick near the mouth of the test tube in which reaction is taking place. The match stick will extinguish with a pop sound.

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