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2. Calculate AH for the reaction 4 NH3 (g) + 5 O2 (g) → 4 NO (g)+6 H2O (g), from the following data : N2 (g) + 02 (g) -→2 NO (g) N2 (g) +3 H2 (g) → 2 NH3 (g) 2 H2 (g) + O2 (g) →2 H2O (g) AH = -180.5 kJ AH = -91.8 kJ %3D AH = -483.6 kJ Ans: -1628.2k %3D

2. Calculate AH for the reaction 4 NH3 (g) + 5 O2 (g) → 4 NO (g)+6 H2O (g), from the following data : N2 (g) + 02 (g) -→2 NO (g) N2 (g) +3 H2 (g) → 2 NH3 (g) 2 H2 (g) + O2 (g) →2 H2O (g) AH = -180.5 kJ AH = -91.8 kJ %3D AH = -483.6 kJ Ans: -1628.2k %3D

Chemistry
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ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
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Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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+2 02 (g) 2 Ss) + 3 O2g → 2 SO3(g) .11 X + ODE2 296.8 kJ AH = -791.4 kJ Given: SO2(e) ) → S(s) + O2e) + O2g) ΔΗ AH = %3D Ans: -197.8kl 2 S(s) + 3 O2(g) → 2 SO3(2) 2. Calculate AH for the reaction 4 NH3 (g) + 5 O2 (g) → 4 NO (g) + 6 H2O (g), from the following data : N2 (g) + 02 (g)→ 2 NO (g) N2 (g) + 3 H2 (g)→2 NH3 (g) 2 H2 (g) + O2 (g) →2 H2O (g) AH = -180.5 kJ AH = -91.8 kJ 3D AH = ΔΗ -483.6 kJ Ans: -1628.2kJ 3. Find AHf for acetic acid, HC2H3O2, using the following thermochemical data. HC2H3O2 (1) + 2 02 (2) 2 CO2 (2) + 2 H2O (1) AH -875. kJ/mol AH = -394.51 kJ/mol (1) C (5) + O2 (2) → CO2 (2) (s) + 02 (2) →C02 (g) H2 (g) + 1/2 O2 (2) → H2O (1) AH = -285.8 kJ/mol Ans: - 485.62kJ/mol 4. Calculate the AH for the reaction 2 NO (2) + O218)→ 2 NO2 (2) given: → NO212) + One + O2(2) AH -199 kJ
Transcribed Image Text:+2 02 (g) 2 Ss) + 3 O2g → 2 SO3(g) .11 X + ODE2 296.8 kJ AH = -791.4 kJ Given: SO2(e) ) → S(s) + O2e) + O2g) ΔΗ AH = %3D Ans: -197.8kl 2 S(s) + 3 O2(g) → 2 SO3(2) 2. Calculate AH for the reaction 4 NH3 (g) + 5 O2 (g) → 4 NO (g) + 6 H2O (g), from the following data : N2 (g) + 02 (g)→ 2 NO (g) N2 (g) + 3 H2 (g)→2 NH3 (g) 2 H2 (g) + O2 (g) →2 H2O (g) AH = -180.5 kJ AH = -91.8 kJ 3D AH = ΔΗ -483.6 kJ Ans: -1628.2kJ 3. Find AHf for acetic acid, HC2H3O2, using the following thermochemical data. HC2H3O2 (1) + 2 02 (2) 2 CO2 (2) + 2 H2O (1) AH -875. kJ/mol AH = -394.51 kJ/mol (1) C (5) + O2 (2) → CO2 (2) (s) + 02 (2) →C02 (g) H2 (g) + 1/2 O2 (2) → H2O (1) AH = -285.8 kJ/mol Ans: - 485.62kJ/mol 4. Calculate the AH for the reaction 2 NO (2) + O218)→ 2 NO2 (2) given: → NO212) + One + O2(2) AH -199 kJ
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