Question

1. Describe a method of preparing oxygen without using
a source of heat.​

Answer 1

Step-by-step explanation:

Preparation of oxygen without the use of heat is by electrolysis of water:

The electrolysis of acidified water is carried out in a Hoffmann Voltameter. Oxygen is evolved at the positive electrode in the electrolysis.

2H2O → 2H2 + O2

A solution of barium hydroxide with nickel electrodes may also be used. However, on prolonged electrolysis an explosive mixture of oxygen and hydrogen may be evolved at the positive electrode.

Answer 2

Answer:

Hiiiii.....✌

Preparation of oxygen without the use of heat is by electrolysis of water: The electrolysis of acidified water is carried out in a Hoffmann Voltameter. Oxygen is evolved at the positive electrode in the electrolysis. A solution of barium hydroxide with nickel electrodes may also be used.