question_answer 22)

Write chemical equations for the combustion reaction of the following hydrocarbons: (i) Butane (ii) Pentene (iii) Hexyne (iv) Toluene  

Answer:

(i)\[\underset{\text{Butane}}{\mathop{{{C}_{4}}{{H}_{10}}}}\,(g)\frac{13}{2}{{O}_{2}}(g)\xrightarrow{Heat}4C{{O}_{2}}(g)+5{{H}_{2}}O(g)\] (ii) \[\underset{\text{Pentene}}{\mathop{{{C}_{5}}{{H}_{10}}}}\,(g)+\frac{15}{2}{{O}_{2}}(g)\xrightarrow{Heat}5C{{O}_{2}}(g)+5{{H}_{2}}O(g)\] (iii) \[\underset{\text{Hexyne}}{\mathop{{{C}_{6}}{{H}_{10}}}}\,(g)+\frac{15}{2}{{O}_{2}}(g)\xrightarrow{Heat}5C{{O}_{2}}(g)+5{{H}_{2}}O(g)\] (iv) \[\underset{Toluene}{\mathop{{{C}_{6}}{{H}_{5}}-C{{H}_{3}}}}\,\,\text{or}{{\text{C}}_{7}}{{H}_{g}}(g)+9{{O}_{2}}(g)\xrightarrow{Heat}\]\[7C{{O}_{2}}(g)+4{{H}_{2}}O(g)\]