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5. Liquid hydrazine, N2H4 is a rocket fuel. It combusts in oxygen gas to form nitrogen gas and water. Calculate the enthalpy change for the combustion of hydrazine. 2NH3 (8) N2Og) + 3 H2 (g) → N2H4() + H2O () 2NH3(2) + ½ O2 (g) → N2H40) + H2O (1) + 3N2O(g) 4N2(e) + 3H20 () AH = - 1010kJ AH = - 317 kJ ΔΗ - 143 kJ H2 (e) + ½ O2 (8) → H2O (1) AH = -286 kJ Ans: -623 kJ

5. Liquid hydrazine, N2H4 is a rocket fuel. It combusts in oxygen gas to form nitrogen gas and water. Calculate the enthalpy change for the combustion of hydrazine. 2NH3 (8) N2Og) + 3 H2 (g) → N2H4() + H2O () 2NH3(2) + ½ O2 (g) → N2H40) + H2O (1) + 3N2O(g) 4N2(e) + 3H20 () AH = - 1010kJ AH = - 317 kJ ΔΗ - 143 kJ H2 (e) + ½ O2 (8) → H2O (1) AH = -286 kJ Ans: -623 kJ

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ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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Hi, I would like help with number 5 please!

21 Gr. 11 X ljY5ODE2 5. Liquid hydrazine, N2H4 is a rocket fuel. It combusts in oxygen gas to form nitrogen gas and water. Calculate the enthalpy change for the combustion of hydrazine. 2NH3 (2) + 3N20g) → 4N22) + 3H2O w N2O(g) + 3 H2 (2) → N2H4(1) + H20 (1) 2NH3(2) + ½ 02 (g) → N2H41) + H2O (1) H2 (e) + ½ O2 (2) → H2O (1) () AH = - 1010kJ + H2O (1) AH= -317 kJ AH = - 143 kJ AH=-286 kJ Ans: -623 kJ 6. Calculate AH for the reaction C2H4 (g) + H2 (g) C2H6 (g), from the following data. C2H4 (g) + 3 O2 (g)2 CO2 (g) + 2 H2O (1) C2H6 (g) + 7/2 02 (g)2 CO2 (g) +3 H2O (1) H2 (g) + 1/2 O2 (g) H2O (1) AH =-1411, kJ/mol AH = -1560. kJ/mol AH = -285.8 kJ/mol Ans: -136.8kJ 7. Calculate AH for the reaction CH4 (g) + NH3 (g) → HCN (g) + 3 H2 (g), from the reactions.
Transcribed Image Text:21 Gr. 11 X ljY5ODE2 5. Liquid hydrazine, N2H4 is a rocket fuel. It combusts in oxygen gas to form nitrogen gas and water. Calculate the enthalpy change for the combustion of hydrazine. 2NH3 (2) + 3N20g) → 4N22) + 3H2O w N2O(g) + 3 H2 (2) → N2H4(1) + H20 (1) 2NH3(2) + ½ 02 (g) → N2H41) + H2O (1) H2 (e) + ½ O2 (2) → H2O (1) () AH = - 1010kJ + H2O (1) AH= -317 kJ AH = - 143 kJ AH=-286 kJ Ans: -623 kJ 6. Calculate AH for the reaction C2H4 (g) + H2 (g) C2H6 (g), from the following data. C2H4 (g) + 3 O2 (g)2 CO2 (g) + 2 H2O (1) C2H6 (g) + 7/2 02 (g)2 CO2 (g) +3 H2O (1) H2 (g) + 1/2 O2 (g) H2O (1) AH =-1411, kJ/mol AH = -1560. kJ/mol AH = -285.8 kJ/mol Ans: -136.8kJ 7. Calculate AH for the reaction CH4 (g) + NH3 (g) → HCN (g) + 3 H2 (g), from the reactions.
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