Concept explainers
Interpretation:
Molecular formula of the eugenol has to be determined.
Concept Introduction:
Mole is S.I. unit. The number of moles is calculated as ratio of mass of compound to molar mass of compound.
The expression to relate number of moles, mass and molar mass of compound is as follows:
Empirical formula represents simplest positive integer ratio of atoms in the compound. It only gives proportions of elements in compound. Molecular formula consists of
Answer to Problem 3B.42E
Molecular formula of the eugenol is
Explanation of Solution
The conversion factor to convert
Expression for ideal gas equation is as follows:
Rearrange equation (1) to calculate
Substitute
The expression to relate number of moles, mass and molar mass is as follows:
Rearrange equation (3) to calculate molar mass of compound.
Substitute
In
In
The expression to relate number of moles of
Rearrange equation (5) to calculate mass of
Substitute
The expression to relate number of moles of
Substitute
Mass of
The expression to relate number of moles of
Substitute
Preliminary formula for hydrocarbon is formed with moles of
Each of subscript of
Empirical mass from empirical formula can be calculated as follows:
Molar mass and empirical formula are related by formula as follows:
Rearrange equation (9) to calculate
Substitute
Molecular formula of the eugenol is
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