question_answer 1)

Expand each of the following condensed formulae into their complete structural formulae. (a) \[C{{H}_{3}}C{{H}_{2}}COC{{H}_{2}}C{{H}_{3}}\] (b) \[C{{H}_{3}}CH=CH{{(C{{H}_{2}})}_{3}}C{{H}_{3}}\]

Answer:

(a) \[\text{H}-\underset{\underset{\text{H}}{\mathop{\text{ }\!\!|\!\!\text{ }}}\,}{\overset{\overset{\text{H}}{\mathop{\text{ }\!\!|\!\!\text{ }}}\,}{\mathop{\text{C}}}}\,-\underset{\underset{\text{H}}{\mathop{\text{ }\!\!|\!\!\text{ }}}\,}{\overset{\overset{\text{H}}{\mathop{\text{ }\!\!|\!\!\text{ }}}\,}{\mathop{\text{C}}}}\,-\overset{\overset{\text{O}}{\mathop{\text{ }\!\!|\!\!\text{ }\!\!|\!\!\text{ }}}\,}{\mathop{C}}\,-\underset{\underset{\text{H}}{\mathop{\text{ }\!\!|\!\!\text{ }}}\,}{\overset{\overset{\text{H}}{\mathop{\text{ }\!\!|\!\!\text{ }}}\,}{\mathop{\text{C}}}}\,-\underset{\underset{\text{H}}{\mathop{\text{ }\!\!|\!\!\text{ }}}\,}{\overset{\overset{\text{H}}{\mathop{\text{ }\!\!|\!\!\text{ }}}\,}{\mathop{\text{C}}}}\,-\text{H}\]   (b) \[\text{H}-\underset{\underset{\text{H}}{\mathop{\text{ }\!\!|\!\!\text{ }}}\,}{\overset{\overset{\text{H}}{\mathop{\text{ }\!\!|\!\!\text{ }}}\,}{\mathop{\text{C}}}}\,-\overset{\overset{\text{H}}{\mathop{\text{ }\!\!|\!\!\text{ }}}\,}{\mathop{C}}\,=\overset{\overset{\text{H}}{\mathop{\text{ }\!\!|\!\!\text{ }}}\,}{\mathop{C}}\,-\underset{\underset{\text{H}}{\mathop{\text{ }\!\!|\!\!\text{ }}}\,}{\overset{\overset{\text{H}}{\mathop{\text{ }\!\!|\!\!\text{ }}}\,}{\mathop{\text{C}}}}\,-\underset{\underset{\text{H}}{\mathop{\text{ }\!\!|\!\!\text{ }}}\,}{\overset{\overset{\text{H}}{\mathop{\text{ }\!\!|\!\!\text{ }}}\,}{\mathop{\text{C}}}}\,-\underset{\underset{\text{H}}{\mathop{\text{ }\!\!|\!\!\text{ }}}\,}{\overset{\overset{\text{H}}{\mathop{\text{ }\!\!|\!\!\text{ }}}\,}{\mathop{\text{C}}}}\,-\underset{\underset{\text{H}}{\mathop{\text{ }\!\!|\!\!\text{ }}}\,}{\overset{\overset{\text{H}}{\mathop{\text{ }\!\!|\!\!\text{ }}}\,}{\mathop{\text{C}}}}\,-\text{H}\]