Example 1: Calculate the Enthalpy change for the combustion of CH4 to form CO2 and liquid water. CH4 (g) + 2O2 (g) CO2(g) + 2H2O (g) = → ΔH 2H2O (g) 2H2O (l) = -88 kJ → ΔH CH4 (g) + 2O2 (g) CO2 (g) + 2H2O (l) = ? → ΔH Example 2: The enthalpy of combustion of to CO2 is -393.5 kJ/mol and the enthalpy of combustion of CO to CO2 is -283.0 kJ/mol. C (s) + O2 (g) CO2 (g) = -393.5 kJ → ΔH CO (g) + ½ O2 (g) CO2 (g) = -283.0 kJ → ΔH Using this data, calculate the enthalpy of combustion of C to CO by the reaction C(s) + ½ O2 (g) CO(g) → Assignment #6 Calculations of Enthalpy from Related Reactions 1. Calculate the enthalpy for the following reaction: 2. Calculate the enthalpy for the following reaction: 3. From the following enthalpy changes, calculate the value of for the reaction of C + O2 CO2 ∆H 4. From the following enthalpy changes, calculate the of for the reaction of PCl3 + Cl2 PCl5 ∆H 5. From the following enthalpy changes, calculate the value of for the reaction of ∆H C2H5OH CH3OCH3
Example 1: Calculate the Enthalpy change for the combustion of CH4 to form CO2 and liquid water. CH4 (g) + 2O2 (g) → CO2(g) + 2H2O (g) ΔH = 2H2O (g) → 2H2O (l) ΔH = -88 kJ CH4 (g) + 2O2 (g) → CO2 (g) + 2H2O (l) ΔH = ? Example 2: The enthalpy of combustion of to CO2 is -393.5 kJ/mol and the enthalpy of combustion of CO to CO2 is -283.0 kJ/mol. C (s) + O2 (g) → CO2 (g) ΔH = -393.5 kJ CO (g) + ½ O2 (g) → CO2 (g) ΔH = -283.0 kJ Using this data, calculate the enthalpy of combustion of C to CO by the reaction C(s) + ½ O2 (g) → CO(g) Assignment #6 Calculations of Enthalpy from Related Reactions 1. Calculate the enthalpy for the following reaction: 2. Calculate the enthalpy for the following reaction: 3. From the following enthalpy changes, calculate the value of ∆H for the reaction of C + O2 CO2 4. From the following enthalpy changes, calculate the of ∆H for the reaction of PCl3 + Cl2 PCl5 5. From the following enthalpy changes, calculate the value of ∆H for the reaction of C2H5OH CH3OCH3
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