2b. The enthalpy of reaction for the combustion of cyclopropane (i.e., the reaction in 2a) is measured to be A„H° = –2091 kJ/mol in the standard state at 25° C. Find the standard state enthalpy of formation, Af H°, at 25° C for CO2(g) and H20(1) in Appendix A of Engel (or in published chemical tables of heats of formation). Use this information to determine the enthalpy of formation for cyclopropane in the standard state at 25° C.

Chemistry
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Chapter1: Chemical Foundations
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The equation I found for 2a was:

C3H6 + 9/2 O2 ----> 3CO2 +3H2O

**Problem 2b: Determining the Enthalpy of Formation for Cyclopropane**

Given:
- The enthalpy of reaction for the combustion of cyclopropane is \(\Delta_rH^0 = -2091 \, \text{kJ/mol}\) in the standard state at 25°C.

Task:
- Find the standard state enthalpy of formation, \(\Delta_fH^0\), at 25°C for \(\text{CO}_2(g)\) and \(\text{H}_2\text{O}(l)\) using Appendix A of Engel or published chemical tables of heats of formation.
- Use this information to determine the enthalpy of formation for cyclopropane in the standard state at 25°C.
Transcribed Image Text:**Problem 2b: Determining the Enthalpy of Formation for Cyclopropane** Given: - The enthalpy of reaction for the combustion of cyclopropane is \(\Delta_rH^0 = -2091 \, \text{kJ/mol}\) in the standard state at 25°C. Task: - Find the standard state enthalpy of formation, \(\Delta_fH^0\), at 25°C for \(\text{CO}_2(g)\) and \(\text{H}_2\text{O}(l)\) using Appendix A of Engel or published chemical tables of heats of formation. - Use this information to determine the enthalpy of formation for cyclopropane in the standard state at 25°C.
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