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What are the types of chemical reaction tell with definition. |
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Answer» Combination reactions: A combination reaction is one in which two or more reactants combine to form a single product.\xa02Ca + O2\xa0→\xa02CaODecomposition reaction: Decomposition reactions are those in which a substance splits into two or more simpler substances.\xa0Decomposition reactions are the opposite of combination reactions.2H2O → 2H2 + O2Single displacement reaction: Single displacement reaction is the one in which one element substitutes or displaces another element in a compound to give new compound.\xa0Generally\xa0in a single displacement reaction, less active metal is displaced by a more active metal.Mg + CuCl2 → MgCl2 + CuDouble displacement reaction: The reactions which involves\xa0exchange of ions (cations and anions) between the reactants are called double displacement reactions.BaCl2\xa0(aq) + Na2SO4 (aq)\xa0→ BaSO4\xa0(s)\xa0+ NaCl\xa0(aq)Exothermic reaction: Chemical reactions in which heat energy released are known as exothermic reactions.Burning of methane gas in air produces heat energy.CH4\xa0(g)\xa0+ 2O2\xa0(g)\xa0→ CO2\xa0(g)\xa0+ 2H2O (l)+ heatEndothermic reaction: Reactions\xa0which involves absorption of energy are known as endothermic reactions.Example:Formation of nitric oxide from nitrogen and oxygen.N2\xa0(g)+ O2\xa0(g)\xa0+ Heat\xa0→\xa02NO\xa0 Combination reaction is a reaction in which a single product is formed from two or more reactantsDecomposition reaction is a reaction where from a single product two diffrent reactans are formed |
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