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Which Gas is Usually Liberated When an Acid Reacts with a Metal? Illustrate with an Example. How Will You Test for the Presence of this Gas? - Science

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Which gas is usually liberated when an acid reacts with a metal? Illustrate with an example. How will you test for the presence of this gas?

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Solution

Hydrogen gas is usually liberated when an acid reacts with a metal.

Take few pieces of zinc granules and add 5 ml of dilute H2SO4. Shake it and pass the gas produced into a soap solution. The bubbles of the soap solution are formed. These soap bubbles contain hydrogen gas.

H2SO4+Zn → ZnSO4 + H2

We can test the evolved hydrogen gas by its burning with a pop sound when a candle is brought near the soap bubbles.

Concept: Acids
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APPEARS IN

NCERT Class 10 Science
Chapter 2 Acids, Bases and Salts
Q 2 | Page 22

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