oxygen gas

Preparation of Oxygen

rawan239
January 16, 2018
Categories: Part III Applied Science
Tags: acid, AD, bond dissociation energy, Carbon, carbon dioxide, chemical properties, Chemical properties of oxygen, excess oxygen, gas jar, generation, heat, hydrogen gas, manganese, manganese dioxide, metal, metals, NITI, Nitric acid, nitrogen dioxide, oxygen gas, Physical Properties, Physical properties of oxygen, plan, Preparation of Oxygen, Rs, RU, temperature, the reaction, water trough

Preparation of Oxygen Oxygen is prepared in lab generally in two ways either by the application of heat or no application of heat. Using heat: Oxygen in lab is prepared by heating the mixture of powdered potassium chlorate and manganese dioxide in the ratio 4:1 in a hard glass test tube. The oxygen gas is observed in a gas jar through the downward displacement of water. The reaction involved is given below: 2KClO3−→−−−−−MnO2200−300∘C2KCl+3O2↑ Without heat: The dry sodium peroxide is taken in a conical flask and the apparatus is fitted as shown in figure. The two necks of woulfe’s bottle ... Read more