Organic Chemistry Plus Mastering Chemistry with Pearson eText -- Access Card Package (9th Edition) (New in Organic Chemistry)
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Chapter 25, Problem 25.31SP

(a)

Interpretation Introduction

To determine: The terpene compounds and isoprene units of terpenes.

Interpretation: The terpene compounds are to be predicted and circle around isoprene units of terpenes is to be drawn.

Concept introduction: An isoprene unit is made up 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 Introduction

To determine: If Vicks Vapo-Rub is optically active with an explanation.

Interpretation: The validation of the fact that Vicks Vapo-Rub is optically active is to be stated with an explanation.

Concept introduction: The optical activity of compound depends upon the number of chiral carbons and element of symmetry it have. Optically active compounds rotate plane of polarized light in right or left direction.

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