
Concept explainers
(a)
Interpretation:
The isoprene units in the given terpenes are to be circled.
Concept introduction:
An isoprene unit is bunched of five-carbon atoms. In terpenes, the isoprene units are connected to each other in head to tail fashion. The head part of an isoprene unit is branched, whereas the tail part of an isoprene unit is unbranched.
(b)
Interpretation:
The identification of the given terpenes as a monoterpene, sesquiterpene or diterpene is to be stated.
Concept introduction:
An isoprene unit is bunched of five-carbon atoms. In terpenes, the isoprene units are connected to each other in head to tail fashion. The head part of an isoprene unit is branched, whereas the tail part of an isoprene unit is unbranched.

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Chapter 25 Solutions
Organic Chemistry Plus Mastering Chemistry with Pearson eText -- Access Card Package (9th Edition) (New in Organic Chemistry)
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