Question

Saloni took a piece of burning charcoal and collected the gas evolved in a test tube.
(a) How will she find the acidic/basic nature of the gas?
(b) Write down word equation of all the reactions taking place in this process.

Answer 1

(a) Saloni needs to add some water in the test tube in which the gas is collected. She needs to cover the tube and shake it well. Now, she will test the solution with both red and blue litmus. Blue litmus turns to red which shows that the gas is acidic in nature.

(b) Carbon in charcoal reacts with oxygen to form carbon dioxide gas.
$Carbon+Oxygen⟶Carbondioxide$

Carbon dioxide gas reacts with water to form carbonic acid which is acidic in nature and turns blue litmus red.
$Carbondioxide+Water⟶Carbonicacid$