Empirical Formula Proof for C₂H302, a compound containing 57.838% carbon, 3.641% hydrogen, and 38.521% oxygen : CARBON 57.838% 79.887% 27.293% 40.002% ASSUME A 100 g SAMPLE 57.838% of 100: 0.57838 100 = 57.838 g C 3.641% of 100: 0.03641100 = 3.641 g H 38.521% of 100: 0.38521100= 38.521 g 0 Show the empirical formula proof for any other compound listed in the table provided: Percent Composition HYDROGEN 3.6405% 20.113% 6.7142% OXYGEN 38.521% 72.711% 53.284% Empirical Formula 57.838 g C x CONVERT EACH TO MOLES USING MOLAR MASS OF EACH ELEMENT 1 mole C= 4.8154 moles C 12.011 g C 3.641 g H x 1 mole H = 1.008 g H 38.521 g 0 x 1 mole 0 2.4077 moles O 15.999 g O C₂H₂O₂ CH₂ CO₂ CH₂O Molecular Formula C₂H₂O₁ C₂H₂ CO₂ C₂H₂O 3.6121 moles H DIVIDE ALL MOLES BY THE SMALLEST MOLE AMOUNT 4.8154 moles C/ 2.4077= 2 3.6121 moles H/2.4077 = 1.5 2.4077 moles O/2.4077= 1 C₂H₁.501 MULTIPLY & ROUND SUBSCRIPTS TO ENSURE WHOLE NUMBERS AS NECESSARY C₂H₁.50₁ I C₂H₂O₂ x 2
Empirical Formula Proof for C₂H302, a compound containing 57.838% carbon, 3.641% hydrogen, and 38.521% oxygen : CARBON 57.838% 79.887% 27.293% 40.002% ASSUME A 100 g SAMPLE 57.838% of 100: 0.57838 100 = 57.838 g C 3.641% of 100: 0.03641100 = 3.641 g H 38.521% of 100: 0.38521100= 38.521 g 0 Show the empirical formula proof for any other compound listed in the table provided: Percent Composition HYDROGEN 3.6405% 20.113% 6.7142% OXYGEN 38.521% 72.711% 53.284% Empirical Formula 57.838 g C x CONVERT EACH TO MOLES USING MOLAR MASS OF EACH ELEMENT 1 mole C= 4.8154 moles C 12.011 g C 3.641 g H x 1 mole H = 1.008 g H 38.521 g 0 x 1 mole 0 2.4077 moles O 15.999 g O C₂H₂O₂ CH₂ CO₂ CH₂O Molecular Formula C₂H₂O₁ C₂H₂ CO₂ C₂H₂O 3.6121 moles H DIVIDE ALL MOLES BY THE SMALLEST MOLE AMOUNT 4.8154 moles C/ 2.4077= 2 3.6121 moles H/2.4077 = 1.5 2.4077 moles O/2.4077= 1 C₂H₁.501 MULTIPLY & ROUND SUBSCRIPTS TO ENSURE WHOLE NUMBERS AS NECESSARY C₂H₁.50₁ I C₂H₂O₂ x 2
Chemistry: An Atoms First Approach
2nd Edition
ISBN:9781305079243
Author:Steven S. Zumdahl, Susan A. Zumdahl
Publisher:Steven S. Zumdahl, Susan A. Zumdahl
Chapter5: Stoichiometry
Section: Chapter Questions
Problem 138AE: Terephthalic acid is an important chemical used in the manufacture of polyesters and plasticizers....
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