(a) Thermal decomposition reaction (Thermolysis) Decomposition of potassium chlorate: When heated strongly, potassium chlorate decomposes into potassium chloride and oxygen. This reaction is used for the preparation of oxygen.
2KClO3 + Heat → 2KCl + 3O2
(b) Electrolytic decomposition reaction (Electrolysis) Decomposition of sodium chloride: On passing electricity through molten sodium chloride, it decomposes into sodium and chlorine
\( 2NaCl \overset{electricity}{\to}2Na+Cl_2\)
(c) Photodecomposition reaction (Photolysis) Decomposition of hydrogen peroxide: In the presence of light, hydrogen peroxide decomposes into water and oxygen.
\( 2H_2O_2\overset{light}{\to}2H_2O\)
Answered by Vishal kumar | 1 year agoProvide Some Important MCQ Questions for Class 10 Science Chemical Reactions and Equations with Answers?
Explain the following terms with one example each.
(a) Corrosion
(b) Rancidity Solution:
Oil and Fat containing food items are flushed with Nitrogen. Why?
Why do we apply paint on iron articles?
A shiny brown coloured element ‘X’ on heating in the air becomes black in colour. Name the element ‘X’ and the black coloured compound formed.