Balancing equations

Equations in chemistry : When two or more reactants react together chemically to produce products then this reaction is called a chemical equation. Eg : NaOH(base) + HCl(acid) --> NaCl(common table salt) + H₂O(water) Types of reactions : 1) Combination reactions - When two or more elements or compounds react with each other to form fewer compounds then started is called a combination reaction Eg : 2Mg + O₂ ---> 2MgO

2)Decomposition reactions : When only 1 reactant either is heated or electricity is made to pass through it to form two or more products then the reaction is called decomposition reaction. Eg : 2NaCl (on heating) ---> 2Na + Cl₂

3)Displacement reactions : When two reactants react such that one ion/radical gets exchanged with another to form a product then the reaction is a single displacement reaction. Eg : Zn + H₂SO₄ ---> ZnSO₄ + H₂

4)Double displacement reaction : When two reactants react with eachother such that 2 ions/radicals get exchanged with eachother then the reaction is double displacement reaction Eg : AgNO₃ + NaCl ---> AgCl + NaNO₃

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