9. (a) What is a decomposition reaction ?
(b) Decomposition reactions can occur by (i) heat
(ii) electricity and (iii) sunlight.
Give two balanced equations for each.
Answers
Explanation:
when are reactance is decomposed into two or more products then it is called as decomposition reaction .
decomposition reaction can be occurred by the heat electricity and some light by the process of electrolysis, photolysis, thermolysis.
Heat
CaCO
3
=CaO+CO
2
FeSO
4
→Fe2O
3
+SO
2
+SO
3
ii) Electricity
2H
2
O→H
2
+O
2
iii) Light
2Agbr
→
sunlight
2Ag+Br
2
2AgCl(S)
→
Sunlight
2Ag(s)+Cl
2
(l)
Answer[ a] Decomposition Reaction. A reaction in which a compound splits up into two or more simpler substances is known as a decomposition reaction. ... Sulfur dioxide and sulfur trioxide gases are also released in this reaction. They have a pungent and rotten smell due to the burning of sulfur
Answer[ b]option (i) heat is ur answer
explanation: A decomposition reaction occurs when one reactant breaks down into two or more products. It can be represented by the general equation: AB → A + B. In this equation, AB represents the reactant that begins the reaction, and A and B represent the products of the reaction. Answer[c] oxygen, molecules is ur answer