Question: each question using full sentences and show all your work for any calculations. Ensure to use the Bold text startGRASS methodBold text End (Given, Required,

each question using full sentences and show all your work for any calculations. Ensure to use the Bold text startGRASS methodBold text End (Given, Required, Analysis, Solution, Statement) for questions involving calculations.

9. Calculate the standard enthalpy change of combustion of ethanol from the following standard enthalpies of formation: [9 marks] C2H5OH(1) + 3 02(g) 2 CO2(g) + 3 H20(1) C(graphite) + 02(g) CO2(9) AHf (CO2) = -393.5 kJ/mol H2(g) + 1/2 02(g) H20(1) AHf (H20) = -285.8 kJ/mol 2 C (graphite) + 3 H2(g) + 1/2 02(g) C2HOH(1) AH, (ethanol) = -277.1 kJ/mol

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