- Question 2Which 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?
- NCERT Solutions for Class 10 Science Chapter 2 Acids, Bases And Salts – Study Path
Question 2Which 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?
Hydrogen gas is usually liberated when an acid reacts with a metal. Take few pieces of zinc granules and add 5 ml of dilute H 2 SO 4 and shake it. The gas produced is passed into a soap solution. The bubbles of soap solution are formed. These soap bubbles contain hydrogen gas. The reaction occurs as follows: H 2 SO 4 (aq) + Zn(s) → ZnSO 4 (aq) + H 2 ( ↑ ) We can test the evolved hydrogen gas, as it burns with a pop sound when a candle is brought near the soap bubbles.
NCERT Solutions for Class 10 Science Chapter 2 Acids, Bases And Salts – Study Path
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