Question

Give one example each of equation only

I. Thermal decomposition reaction

II. Reversible reactions

III. Simple displacement reaction​

Answer 1

1. CaCO3 → CaO + CO2 When heated, calcium carbonate decomposes into calcium oxide and carbon dioxide.
2. The concept of a reversible reaction was introduced by Berthollet in 1803, after he had observed the formation of sodium carbonate crystals at the edge of a salt lake (one of the natron lakes in Egypt, in limestone): 2NaCl + CaCO3 → Na2CO3 + CaCl.
3. A single-displacement reaction, is a chemical reaction in which one element is replaced by another in a compound. It can be represented generically as: A + B-C → A-C + B.

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