Class 10 Science - Chapter Acids, Bases and Salts NCERT Solutions | Which gas is usually liberated when an a

Welcome to the NCERT Solutions for Class 10th Science - Chapter Acids, Bases and Salts. This page offers a step-by-step solution to the specific question from Excercise ".$ex_no." , Question 2: which gas is usually liberated when an acid reacts....
Question 2

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?

Answer

An acid when reacts with a metal Hydrogen gas is liberated

Let's take a few pieces of zinc metals and add a few drops of dilute H2SOmouth of the test tube is fitted with a cork and the delivery tube is fitted so that the gas evolved reaches the soap solution. Hydrogen gas forms bubbles on the soap solution.

H2SO4 + Zn → ZnSO4 + H2 ↑

When we bring a burning candle near the gas, a pop sound will produce. It indicates the presence of Hydrogen gas.

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