Oxygen questions | form two Chemistry

Oxygen reacts with non-metals to form  ____ oxide and when it reacts with metals it forms  __ oxide.

Answer / Solution

UNSOLVED

1. Draw a well labeled diagram of laboratory preparation of oxygen from decomposition of hydrogen peroxide on the presence of manganese(IV) oxide and label each type of material used.
2. Explain the function of manganese in this reaction.

Answer / Solution

UNSOLVED

Oxygen gas can be produced at a large scale by

1. condensation of air.
2. condensation of liquefied air.
3. liquefaction of steam.
4. Fractional distillation of liquefied air.
5. evaporation of liquefied air.

Answer / Solution

500. Fractional distillation of liquefied air.