Explain the following reaction with one example each :
(i) Substitution reactions (ii) Addition reactions
(iii) Combustion reactions (iv) Oxidation reactions
Explain the following reaction with one example each :
(i) Substitution reactions (ii) Addition reactions
(iii) Combustion reactions (iv) Oxidation reactions
(i) Substitution reactions - Substitution reaction is also known as single displacement reaction and single replacement reaction. In a substitution reaction, a functional group in a particular chemical compound is replaced by another group.
(ii) Addition reactions- An addition reaction is an organic reaction where two or more molecules combine to form a larger one.
Addition reactions are limited to chemical compounds that have multiple bonds, such as molecules with carbon-carbon double bonds (alkenes), with triple bonds (alkynes) or with carbonyl (C=O) groups can undergo addition as they too have double bond character.
(iii) Combustion reactions- In a complete combustion reaction, a compound reacts with an oxidizing element, such as oxygen and the products are compounds of each element in the fuel with the oxidizing element. It is an exothermic reaction. For example:
CH4 (g) + 2O2 (g) → CO2(g) + 2H2O(g) + heat + light
(iv) Oxidation reactions- Reaction in which oxygen is added to or hydrogen is removed from a compound is called as oxidation reaction.
C2H5OHacidified K2Cr2O7−−−−−−−−−−−→ CH3COOH
(i) Substitution reactions - Substitution reaction is also known as single displacement reaction and single replacement reaction. In a substitution reaction, a functional group in a particular chemical compound is replaced by another group.
(ii) Addition reactions- An addition reaction is an organic reaction where two or more molecules combine to form a larger one.
Addition reactions are limited to chemical compounds that have multiple bonds, such as molecules with carbon-carbon double bonds (alkenes), with triple bonds (alkynes) or with carbonyl (C=O) groups can undergo addition as they too have double bond character.
(iii) Combustion reactions- In a complete combustion reaction, a compound reacts with an oxidizing element, such as oxygen and the products are compounds of each element in the fuel with the oxidizing element. It is an exothermic reaction. For example:
CH4 (g) + 2O2 (g) → CO2(g) + 2H2O(g) + heat + light
(iv) Oxidation reactions- Reaction in which oxygen is added to or hydrogen is removed from a compound is called as oxidation reaction.
C2H5OHacidified K2Cr2O7−−−−−−−−−−−→ CH3COOH
