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OXYGEN - Coggle Diagram

OXYGEN

Laboratory Preparation of Oxygen

HEATING A MIXTURE OF POTASSIUM TRIOXOCHLORATE(V), KClO3 AND MAGANESE(IV) OXIDE, MnO2.

THE REACTION BETWEEN WATER AND SODIUM PEROXIDE. Na2O2(s) + 2H2O → H2O2 + 2Na+ + 2OH–

APPLICATION OF HEAT ON TRIOXONITRATE(V) SALTS OF METALS.

CHEMICAL PROPERTIES:

Reaction with compounds- CH4(g) + 2O2(g) → CO2(g) + 2H2O(g)

PHYSICAL PROPERTIES:

IT IS COLOURLESS, HAS NO ODOUR AND IS NEUTRAL.

DENSITY – THE DENSITY INCREASES DOWN THE GROUP WITH THE INCREASE IN ATOMIC NUMBER.

MELTING POINT AND BOILING POINT – IT SHOWS A REGULAR INCREASE DOWN THE GROUP.

Classification of Oxides

Acidic oxides, Examples: NO, CO2, SO3 + H2O → H2SO

Basic oxides: Examples: M2O3, MO2, ThO2;’ Na2O + H2O → 2NaOH

Amphoteric oxides: basic and acid characteristics: Al2O3 + 6HCl → 2Al3+ + 6Cl– + 3H2O; Al2O3 +2OH– + 3H2O → 2[Al (OH)4]–

Uses of Oxygen

Used as an aid for breathing where problem of breathing arises.

In the oxyacetylene flame for welding and cutting steel plate

 Used in the L-D process for making steel.