Describe how Hussain can test for the decrease gas during redox reaction in the laboratory?

Hussain can test for the decrease in gas during a redox reaction in the laboratory by using a gas collection apparatus. This apparatus typically consists of a reaction vessel connected to a gas collection tube, which leads to a gas measuring device such as a gas syringe or a gas burette.

To test for the decrease in gas during a redox reaction, Hussain can set up the reaction vessel with the appropriate reactants and catalysts, if necessary. As the reaction proceeds, any gas produced will be collected in the gas collection tube. Hussain can periodically measure the volume of gas collected in the gas measuring device to track the progress of the reaction.

If there is a decrease in gas volume over time, it indicates that the gas is being consumed in the reaction. This can be a sign of a redox reaction, where one reactant is being oxidized and another is being reduced. By monitoring the decrease in gas volume, Hussain can infer the progress of the redox reaction and determine the efficiency of the reaction conditions.