
(a)
Interpretation:
To write the molecular formula and condensed formula of given molecule:
Concept introduction:
Condensed formula: It is a way of writing the molecule where all the atoms are arranged in order as appear in structural formula but while writing condensed formula, bond lines are omitted. For example: Condensed formula of propane is CH3 CH2 CH3.
Molecular formula: It is the easiest way of representing the number of atoms of each element in a molecule.
While writing molecule formula,

Answer to Problem 48QAP
Condensed formula: CH3 COOH
Molecular formula: C2 H4 O2
Explanation of Solution
Given structural formula-
In above structural formula, CH3 group is attached with acetic acid group through carbon atom. Hence, its condensed formula will be CH3 COOH.
In 1 molecule of CH3 COOH, there are 2 carbon atoms, 4 hydrogen atoms and 2 oxygen atoms. Therefore, its molecular formula is C2 H4 O2.
(b)
Interpretation:
To write the molecular formula and condensed formula of given molecule:
Concept introduction:
Condensed formula: It is a way of writing the molecule where all the atoms are arranged in order as appear in structural formula but while writing condensed formula, bond lines are omitted. For example: Condensed formula of propane is CH3 CH2 CH3.
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:

Answer to Problem 48QAP
Condensed formula: CH3 Cl
Molecular formula: CH3 Cl
Explanation of Solution
Given structural formula:
In above structural formula, CH3 group is attached with Chlorine group through carbon atom. Hence, its condensed formula will be CH3 Cl.
In 1 molecule of CH3 Cl, there are 1 carbon atom, 3 hydrogen atoms and 1 chlorine atom. Therefore, its molecular formula is CH3 Cl.
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Chapter 2 Solutions
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