Question

chillies used in the preparation of Oxygen gas in the laboratory is
a.) Pt
b.) MnO2
c.) H2O2
d.) Ni



tell me the correct answer​

Answer 1

Answer:

Q16) In the laboratory preparation of oxygen from hydrogen peroxide - answer the following:

(a) Draw a neat labelled diagram for the method used in the above preparation.

(b) Name the catalyst used in the preparation and state its function.

(c) State the word equation for the reaction involving the above preparation of oxygen

(d) State the method of collection of the oxygen gas giving reasons.

Solution:

(a)

(b) Catalyst used is manganese dioxide, it increases the speed of decomposition of H2O2.

(c) Hydrogen peroxide → Water + oxygen

(d) The method of collecting oxygen is downward displacement of water.

The reasons for collecting oxygen:

It is slightly soluble in water

It is as heavy as air.