Question

types of chemical reactions.........

Answer 1

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There are 5 types of chemical reactions :-
1. Combination reaction
2. Decomposition reaction
3. Displacement reaction
4. Double displacement reaction
5. Redox reaction

Answer 2

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Types of chemical reactions :

✔️combination reaction : two or more substances combine to form a single substance.

Example : CaO + H2O -----------> Ca(OH)2

✔️decomposition reaction :a single reactant breaks down to give simpler products.

Example : CaOCO3 --------> CaO + CO2

✔️displacement reactions in such reactions more reactive element displaces less reactive element from its compound.

Example : Zn + CuSO4 ---------> ZnSO4 + Cu

✔️double displacement reaction two compounds react by exchange of Ions to format to new compounds.

Example:BaCL2+ Na2SO4------>BaSO4+ 2NaCl

✔️exothermic reaction is Liberation of heat and thermic reaction is absorption of heat.

✔️redox reactions if a substance gains oxygen during a reaction all losses hydrogen it is said to be oxidised if a substance loses oxygen organs hydrogen during a reaction, it is said to be produced in a chemical reaction ban ban reactant gets oxidized while the other gets reduced such reactions are called redox reactions.