Give an example of a reaction in which gas is evolved.
Combustion reaction:-
CH4(g)Methane+2O2(g)Oxygen→CO2(g)(↑)Carbondioxide+2H2O(g)Watervapour
Therefore, the burning of methane produces carbon dioxide (CO2):
Question 20
Give an example of a chemical reaction for each of the following situations: (a) A change in colour is observed. (b) A gas is evolved (c) Sound is produced.
Give an example of solid solution in which the solute is a gas.
An example of reaction in which gas is evolved is: