1. Summary

    Carbon compounds undergo different types of chemical reactions.

    Combustion:
    All carbon compounds react with oxygen to produce heat and light along with carbon dioxide and water. This reaction of carbon with oxygen is called combustion.

    Carbon Compound + Oxygen →Carbon dioxide +water+heat and light
    CH4 + 2O2 →CO2 +2H2O + Heat and light.

    • Aliphatic compounds on combustion produce a non-sooty flame.
    • Aromatic compounds on combustion produce sooty flame.


    Oxidation:
    Alcohols undergo oxidation in presence of oxidising agents like alkaline potassium permanganate or acidified potassium dichromate to form carboxylic acids. Example: Ethyl alcohol on oxidation with alkaline potassium permanganate or acidified potassium dichromate gives acetic acid.



    Addition reactions:
    A chemical reaction is said to be an  addition reaction if two substances combine and form a third substance. Addition reaction is the one in which a molecule adds across a double bond or a triple bond.
    Unsaturated hydrocarbons undergo addition reactions. Hydrogenation reaction involves the addition of hydrogen to unsaturated hydrocarbons in presence of catalyst like nickel to form saturated hydrocarbons.

    Example:

     

    Substitution reaction:
    A reaction in which an atom or group of atoms replaces another atom or group of atoms is called substitution reaction. Alkanes undergo substitution reactions. Example: chlorination of methane in presence of sunlight gives a mixture of products like methyl chloride, methylene chloride, chloroform, and carbon tetrachloride.
     

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