Question

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

Answer 1



Chemical Decomposition Reaction of Hydrogen Peroxide

Hydrogen Peroxide strongly tends to decompose into water and oxygen, at that developing a great amount of heat according to the following formula:

2 H2O2 → 2 H2O + O2+ 196.2 KJ

However at room temperature and temperatures < 60 degree C, the rate of decomposition is immeasurably low so that hydrogen peroxide is practically permanent (metastable) in air. By using suitable catalysts, the decomposition process can be accelerated strongly so that complete decomposition of the hydrogen peroxide into the components water vapour and atmospheric oxygen can be reached in an air flow already at room 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.