Transcription of Chapter 4: Chemical and Solution Stoichiometry
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Chapter 4: Chemical and Solution Stoichiometry
1 Chapter 4: Chemical and Solution Stoichiometry (Sections )1 Reaction Stoichiometry The coefficients in a balanced Chemical equation specify the relative amounts in moles of each of the substances involved in the reaction2 C4H10 (g)+ 13 O2 (g) 8 CO2 (g) + 10 H2O (g)Tro: Chemistry: A Molecular Approach, 2/eMole ratio2mol C4H10: 13mol O2: 8mol CO2: 10mol H2O 2 molecules of C4H10react with 13 molecules of O2to form 8 molecules of CO2and 10 molecules of H2O 2 moles of C4H10react with 13 moles of O2to form 8 moles of CO2and 10 moles of H2O22 Predicting Amounts from Stoichiometry The amount of any other substance in a Chemical reaction can be determined from the amount of justonesubstanceTro: Chemistry: A Molecular Approach, 2/e2C4H10 (g)+ 13 O2 (g) 8CO2 (g)+ 10 H2O (g)102424108 moles CO2 22 moles C H x88 momoles C Hles CO= How much CO2 can be made from
5 Example: Estimate the mass of CO 2 produced in 2007 by the combustion of 3.5 x 10 15 g gasoline. Assuming that gasoline is octane, C 8H18, the equation for the reaction is 2 C 8H18 (l) + 25 O 2 (g) → 16 CO 2 (g) + 18 H 2O (g) Follow the process: g C 8H18 mol C 8H18 mol CO 2 g CO 2 Tro: Chemistry: A Molecular Approach, 2/e
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