Chapter 7, Problem 47P

Interpretation Introduction

Interpretation:

The index of hydrogen deficiency of the compound, the number of double bonds, and the number of rings are to be determined.

Concept introduction:

The reaction in which hydrogen is added to the compound in the presence of catalyst is known as hydrogenation.

The number of moles of hydrogen absorbed will be equal to the number of double bonds.

The Index of hydrogen deficiency is denoted by IHD.

The Index of hydrogen deficiency is calculated by using the formula given below:

$\begin{array}{c}\text{IHD}=\text{rings}+\pi \text{bonds}\\ =\text{C}-\frac{\text{H}}{2}-\frac{\text{X}}{2}+\frac{\text{N}}{2}+1\end{array}$

Here, C represents number of carbon atoms, H represents number of hydrogen atoms, N represents number of nitrogen atoms, and X represents number of halogen atoms.

The compound squalene is a hydrocarbon, which is obtained from shark liver oil and also found in foods, cosmetics etc.

The molecular formula of squalene is ${\text{C}}_{30}{\text{H}}_{50}$.