Principles of Chemistry: A Molecular Approach (3rd Edition)
3rd Edition
ISBN: 9780321971944
Author: Nivaldo J. Tro
Publisher: PEARSON
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Chapter 3, Problem 1SAQ
Interpretation Introduction
Interpretation: The given molecular formula is C10H8 . The correct empirical formula of the given compound is to be identified.
Concept introduction: An empirical formula is “the lowest whole-number ratio of atoms of each element in a compound”.
A molecular formula represents the number of atoms of each element present in a molecule of a compound.
To determine: The correct empirical formula for C10H8 .
Correct answer: The correct option is (c).
Expert Solution & Answer
Explanation of Solution
Reason for correct answer:
A molecular formula represents the number of atoms of each element present in a molecule of a compound.
The given molecular formula is C10H8 , in which ten carbon atoms and eight hydrogen atoms are present. The common factor in C10H8is 2 .
The atoms of carbon and hydrogen present are divided by the common factor to obtain the lowest whole number ratio.
Thus, the empirical formula for C10H8is C5H4 .
Reason for incorrect options:
All the other empirical formula stated in options (a), (b), and (d) do not match with the above stated formula. Hence, they are incorrect.
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Chapter 3 Solutions
Principles of Chemistry: A Molecular Approach (3rd Edition)
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