Question

How can the rate of the chemical reaction ,namely , decomposition of hydrogen peroxide be increased ?

Answer 1

The rate of the decomposition of it can be increased by heating MnO2 or manganese dioxide,which is a positive catalyst(a substance which increases or decreases the rate of the chemical reaction without itself undergoing any chemical change)that increases the rate of decomposition of h2o2.Thus, catalysts are advantageous in some reactions,which are slow(in this case) or require large amount of heat,in which they are decomposed quickly at a lower temperature.

Answer 2

Answer:

Explanation:

(i) The chemical reaction in which two or more

products are formed from a single reactant

is called decomposition reaction. Hydrogen

peroxide decomposes into water and oxygen.

2H2

O2(l)

→ 2H2

O (l) + O2

↑

Hydrogen Oxygen

peroxide

Water

(ii) The decomposition of hydrogen peroxide into

water and oxygen takes place slowly at room

temperature. However, the rate of this chemical

reaction can be increased on adding manganese

dioxide (MnO2

) powder in it, here manganese

dioxide acts as a catalyst.