Question

Give one example each of displacement,decompositionand combination reaction with explanation

Answer 1

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This shows that the gas evolved during the reaction is oxygen. 3.Displacement Reaction: Reactions in which the more reactive element displaces the less reactive element from its compound are called displacement reactions. Zinc displaces copper in copper sulphate to form zinc sulphate.

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Answer 2

In a displacement reaction, an element is displaced(removed) from its salt solution by another element (which is more reactive).EXAMPLE:

Fe + CuSO4→ FeSO4 + Cu

In a decomposition reaction,an element decomposes/is reduced to two or more substances. Example;

2 H2O2 → 2 H2O + O2