Question

Define chemical Reaction. Explain
different type of chemical Reaction​

Answer 1

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Answer 2

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$\bold{There\: are\: mainly \:5 \:types\: of\: Chemical\: Reactions.}$

1) Combination Reaction

Combination reactions are those reactions in which two or more substances combine with each other to form a new single substance.

Example - 1)Mg + O2 -> MgO

2) H2 + O2 -> H2O

2) Decomposition reactions

Decomposition reactions are those reactions in which a compound splits up into two or more simpler substances.

Example - 1) CaCO3 -> CaO + CO2

2) H2O -> H2 + O2

3) Displacement Reactions

Displacement reactions are those reactions in which one element displaces another element in a compound.

Example - CuSO4 + Zn -> ZnSO4 + Cu

Here, Zinc displaces Copper since Zinc is more reactive that copper.

4) Double Displacement Reaction

Those reactions in which two compounds react by an exchange of ions to form two new compounds are known as Double Displacement reactions.

Example - 1)AgNO3 + NaCl -> AgCl + NaNO3

2) NaOH + HCL -> NaCL + H2O

5) Redox Reactions

Redox reactions are those type of reactions which involves transfer of electrons by gaining or losing an electron. It involves both Oxidation and Reduction in chemical reaction.

Example - Cu + AgNO3 -> Cu(NO3)2 + Ag

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