Chapter 2, Problem 47QAP

Interpretation Introduction

(a)

Interpretation:

The molecular formula of dimethylamine from given condensed formula (CH₃)₂NH needs to be determined.

Concept introduction:

Molecular formula: It is the easiest way of representing the number of atoms of each element in a molecule.

While writing molecule formula, symbol of each element is written with their respective number of atoms in a single molecule. And these numbers are written in subscript as:

$\begin{array}{l}{\text{C}}_{\text{x}}{\text{H}}_{\text{y}}{\text{N}}_{\text{z}}\\ \text{where}\text{C,H,}\text{and}\text{N}\text{are}\text{symbol}\text{of}\text{carbon,}\text{hydrogen}\text{and}\text{nitrogen}\text{element}\text{.}\text{And}\text{x,}\text{y,}\text{z}\text{represents}\\ \text{the}\text{number}\text{of}\text{C}\text{,}\text{H}\text{and}\text{N}\text{atoms}\text{in}\text{a}\text{single}\text{molecule}\end{array}$

Interpretation Introduction

(b)

Interpretation:

The molecular formula of propyl alcohol from given condensed formula CH₃(CH₂)₂OH needs to be determined.

Concept introduction:

Molecular formula: It is the easiest way of representing the number of atoms of each element in a molecule.

While writing molecule formula, symbol of each element is written with their respective number of atoms in a single molecule. And these numbers are written in subscript as:

$\begin{array}{l}{\text{C}}_{\text{x}}{\text{H}}_{\text{y}}{\text{O}}_{\text{z}}\\ \text{where}\text{ C,H,}\text{and}\text{O }\text{is}\text{ symbol}\text{of}\text{carbon,}\text{hydrogen}\text{and}\text{oxygen}\text{element respectively}\text{.}\\ \text{x,}\text{y,}\text{z}\text{ represents the}\text{number}\text{of}\text{C}\text{,}\text{H}\text{and}\text{O}\text{ atoms }\text{respectively in}\text{a}\text{single}\text{molecule}\end{array}$