Classify the following as endothermic and exothermic reactions.

(a) Decomposition of ferrous sulphate

(b) Respiration

(c) Burning of natural gas

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Solution

A chemical reaction that includes the release of energy in the form of heat or light is known as an exothermic reaction. Endothermic reactions are chemical reactions in which the reactants absorb heat energy from the surroundings to form products.

(b) and (c) are exothermic reactions as heat is released in each of the reactions.
[2 Marks]
Option (a) is endothermic as heat is absorbed during decomposition reaction.
[1 Mark]

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Similar questions

Which of the following changes are exothermic and endothermic in nature?

(a) Decomposition of ferrous sulphate

(b) Dilution of sulphuric acid

(d) Dissolution of ammonium chloride in water

Question 22
Which among the following changes are exothermic or endothermic in nature?

(a) Decomposition of ferrous sulphate

(b) Dilution of sulphuric acid

(d) Dissolution of ammonium chloride in water

Question 22
Which among the following changes are exothermic or endothermic in nature?

(a) Decomposition of ferrous sulphate

(b) Dilution of sulphuric acid

(d) Dissolution of ammonium chloride in water

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