Concept explainers
Interpretation:
The empirical formula of the compound needs to be determined.
Concept Introduction:
The simplest positive integer ratio of the atoms present in the chemical compound is known as empirical formula.
Answer to Problem 63A
The empirical formula of the compound is CuSH10O9
Explanation of Solution
Given information:
Cu = 25.45 %
S = 12.84 %
H = 4.036 %
O = 57.67 %
Conversion of percentage to grams with 100 g sample:
Mass of Cu = 25.45 g
Mass of S = 12.84 g
Mass of H = 4.036 g
Mass of O = 57.67 g
The calculation of moles is shown below:
The calculation of ratio of number of atoms by dividing the each moles of smallest moles is shown below:
The table of empirical formula is shown below:
Element | % | moles | ratio | Whole no. |
Cu | 25.45 | 0.4005 | 0.400/0.400 | 1 |
S | 12.84 | 0.400 | 0.400/0.400 | 1 |
H | 4.036 | 4.036 | 4.036/0.400 | 10 |
O | 57.67 | 3.60 | 3.60/0.400 | 9 |
The empirical formula of the compound is CuSH10O9
Chapter 6 Solutions
World of 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