
Concept explainers
Interpretation: The empirical formula of the two oxides of Cu must be found out.
Concept Introduction:
The empirical formula of a molecule is the smallest unit that is repeated in the molecule.
The molecular formula of a compound is the representation of the molecule with the number of different atoms present in the molecule.
Molecular formula

Answer to Problem 58A
The empirical formulae of the two oxides of Cu are Cu2O and CuO.
Explanation of Solution
For the first oxide,
Moles of Cu
Moles of O
Smallest mole ratio Cu: O will be:
Thus the compound is Cu2O.
For the second oxide,
Moles of Cu
Moles of O
Smallest mole ratio Cu: O will be:
Thus the compound is CuO.
Empirical formulae of the two copper oxides are Cu2O and CuO.
Chapter 6 Solutions
World of Chemistry, 3rd edition
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