Interpretation:
Using the percentage of the elements, the empirical formula of aspirin needs to be determined.
Concept introduction:
Empirical formula is the chemical formula having the simplest atoms ratio in a compound. Percentage of elements denotes percentage of mass per
The ratio of the moles of the compound is found. Divide both the components by the smallest mole. The numbers are then multiplied by a smallest number which will give a ratio of whole numbers.
Answer to Problem 61PP
Empirical formula of aspirin is
Explanation of Solution
Given information:
Assuming the mass percentage for a
Mass of carbon
Mass of hydrogen
Mass of oxygen
Using mass − mole conversion, one find number of moles of each element.
Molar mass of carbon is
Molar mass of hydrogen is
Molar mass of oxygen
Moles of carbon
Moles of hydrogen
Moles of oxygen
Now divide the values by the smallest mole value:
Hence the ratio will be
In order to get a ratio of whole number, multiply both the number by
Hence the empirical formula of the compound is
Chapter 10 Solutions
Chemistry: Matter and Change
Additional Science Textbook Solutions
Organic Chemistry
Chemistry: A Molecular Approach
Chemistry: Structure and Properties
General, Organic, and Biological Chemistry (3rd Edition)
- ChemistryChemistryISBN:9781305957404Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCostePublisher:Cengage LearningChemistryChemistryISBN:9781259911156Author:Raymond Chang Dr., Jason Overby ProfessorPublisher:McGraw-Hill EducationPrinciples of Instrumental AnalysisChemistryISBN:9781305577213Author:Douglas A. Skoog, F. James Holler, Stanley R. CrouchPublisher:Cengage Learning
- Organic ChemistryChemistryISBN:9780078021558Author:Janice Gorzynski Smith Dr.Publisher:McGraw-Hill EducationChemistry: Principles and ReactionsChemistryISBN:9781305079373Author:William L. Masterton, Cecile N. HurleyPublisher:Cengage LearningElementary Principles of Chemical Processes, Bind...ChemistryISBN:9781118431221Author:Richard M. Felder, Ronald W. Rousseau, Lisa G. BullardPublisher:WILEY