Part A) A 0.5865-g sample of lactic acid(HC3H5O3) is burned in a calorimeter whose heat capacity is 4.812kJ/°C. The temperature increases from 23.10 °C to 24.95 °C.Calculate the heat of combustion of lactic acid per mole.
Part B) Theenthalpy of reaction for the combustion of C toCO2 is –393.5kJ/mol C, and the
enthalpy for the combustion of CO to CO2 is –283.0kJ/mol.
Calculate the enthalpy for the combustion of C to CO:
Part C) Carbonoccurs in two forms, graphite and diamond. The enthalpy of thecombustion
of graphite is–393.5 kJ/mol and that of diamond is–395.4 kJ/mol
C (s, graphite) +O2(g) -->CO2 (g)Â Â
C (s, diamond) +O2(g) -->CO2 (g)Â Â
Calculate for the conversion of graphite to diamond:
∆H = ____ kJ
