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Raksha Agarwal , asked a question
Subject: Science , asked on 16/3/11

difference between Substitution reaction and Addition reaction ???????

Vartika , added an answer, on 16/3/11
945 helpful votes in Science

Addition reaction is a type of reaction in which two or more molecules combine with each other to form a single substance. This type of reaction occurs only with those molecules which have either a double or a triple bond between their carbon atoms.Due to having double bond,these molecules can break one of the carbon-carbon bonds and can ADD other atoms by sharing those electrons with other atoms(which were previously bonded to carbon atoms). Thus, addition reaction makes an unsaturated compound into a saturated compound. Ex--C2H4 + H2 = C2H6

Substitution reaction is a type of reaction in which one atom of any other element substitutes or replaces one of the hydrogen atoms of a given hydrocarbon.Substitution reaction does not add any atom to the hydrocarbon because it takes place only in saturated hydrocarbons(containing only single bonds).Thus if any atom has to be added in the hydrocarbon,one of the hydrogen atoms needs to be replaced by that atom.

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Sara Johnson , added an answer, on 16/3/11
23 helpful votes in Science

substituition reaction is the property of saturated compounds whereas adition reaction is the property of unsaturated compounds.

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shveta.dua... , Meritnation Expert added an answer, on 17/3/11

Dear Student,

Vartika and Sara  have posted correct answers.

Hope it is clear to you.

Best Wishes!

This conversation is already closed by Expert

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