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Explain the Following Types of Chemical Reactions Giving Two Examples for Each of Them Decomposition Reaction . - Chemistry

Short Note

Explain the following types of chemical reactions giving two examples for each of them decomposition reaction .

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Solution

Decomposition reaction: A reaction in which a compound breaks up due to the application of heat into two or more simple substances is called decomposition reaction.
\[\ce{AB->[heat] A + B}\]
e.g. (i) Mercuric oxide when heated, decomposes to form two elements mercury and oxygen
\[\ce{2HgO(s)->[heat] 2Hg(s) + O2(g)}\]
(ii) CaCO3 when heated decomposes to calcium oxide and carbon dioxide.
\[\ce{CaCO3 ->[heat] CaO + CO2}\]

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APPEARS IN

Selina Concise Chemistry Class 8 ICSE
Chapter 6 Chemical Reactions
Exercise 2 | Q 4.2 | Page 86
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