NCERT Class XI Chemistry Hydrocarbons Solutions

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Question : 8
Total: 25
Write chemical equations for combustion reaction of the following hydrocarbons:
(i) Butane
(ii) Pentene
(iii) Hexyne
(iv) Toluene
Solution:  
Upon combustion, any hydrocarbon produces CO2 and H2O. For the given hydrocarbons the reactions may be represented as :
(i) Butane : C4H10+
13
2
O2
Δ
4CO2+5H2O

(ii) Pentane : C5H10+
15
2
O2
Δ
5CO2+5H2O

(iii) Hexyne : C6H10+
17
2
O2
Δ
6CO2+5H2O

(iv) Toluene : C7H8+9O2
Δ
7CO2+4H2O

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