| Read the given passage and fill in the blanks by choosing an appropriate option. |
| The molar ratio of \[C{{O}_{2}}\]and\[{{H}_{2}}O\] produced by the combustion of one mole of hydrocarbon ___i___ is 5: 4. The succeeding homologoue of i is ___ii___ while preceding homologoue is ___iii___. |
A)
i
ii
iii
\[{{C}_{5}}{{H}_{8}}\]
\[{{C}_{6}}{{H}_{10}}\]
\[{{C}_{4}}{{H}_{6}}\]
B)
i
ii
iii
\[{{C}_{3}}{{H}_{8}}\]
\[{{C}_{4}}{{H}_{10}}\]
\[{{C}_{2}}{{H}_{6}}\]
C)
i
ii
iii
\[{{C}_{5}}{{H}_{10}}\]
\[{{C}_{6}}{{H}_{12}}\]
\[{{C}_{4}}{{H}_{8}}\]
D)
i
ii
iii
\[{{C}_{2}}{{H}_{4}}\]
\[{{C}_{3}}{{H}_{6}}\]
\[C{{H}_{4}}\]
Correct Answer: A
Solution :
\[{{C}_{x}}{{H}_{y}}+\left( X+\frac{y}{4} \right){{O}_{2}}\xrightarrow{{}}xC{{O}_{2}}+\frac{y}{2}{{H}_{2}}O\] \[C{{O}_{2}}:{{H}_{2}}O=\frac{x}{\frac{y}{2}}=\frac{5}{4}\] \[\Rightarrow \]\[\frac{x}{y}=\frac{5}{8}\] \[\Rightarrow \]Compound is \[{{C}_{5}}{{H}_{8}}.\] Succeeding homologoue is \[{{C}_{6}}{{H}_{10}}.\] Preceding homologoue is \[{{C}_{4}}{{H}_{6}}.\]
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