H13- Thermo 2-problems

H13- Thermo 2-problems - goldstein (ddg625) – H13: Thermo...

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Unformatted text preview: goldstein (ddg625) – H13: Thermo 2 – mccord – (50970) 1 This print-out should have 20 questions. Multiple-choice questions may continue on the next column or page – find all choices before answering. 001 10.0 points Consider the reaction 4 FeO(s) + O 2 (g)-→ 2 Fe 2 O 3 (s) and heat-of-formation data Fe + 1 2 O 2 (g)-→ FeO Δ H =- 275 kJ / mol 2 Fe + 3 2 O 2-→ Fe 2 O 3 Δ H =- 826 kJ / mol Find the change in enthalpy. Your answer must be within ± 0.1% 002 10.0 points Calculate the standard enthalpy of formation of bicyclo[1.1.0]butane H H C C CH 2 H 2 C given the standard enthalpies of formation of 717 kJ · mol − 1 for C(g) and 218 kJ · mol − 1 for H(g) and the average bond enthalpies of 412 kJ · mol − 1 for C H and 348 kJ · mol − 1 for C C. 1.- 124 kJ · mol − 1 2.- 36 kJ · mol − 1 3. +175 kJ · mol − 1 4. +312 kJ · mol − 1 5.- 472 kJ · mol − 1 003 10.0 points Calculate the enthalpy change for the reaction 2 SO 2 (g) + O 2 (g) → 2 SO 3 (g) Δ H f for SO 2 (g) =- 16 . 9 kJ/mol; Δ H f for SO 3 (g) =- 21 . 9 kJ/mol. 1. +5 . 0 kJ/mol rxn 2.- 5 . 0 kJ/mol rxn 3.- 77 . 6 kJ/mol rxn 4.- 10 . 0 kJ/mol rxn 5. +10 . 0 kJ/mol rxn 004 10.0 points Consider the following substances: HCl(g) F 2 (g) HCl(aq) Na(s)...
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This note was uploaded on 11/11/2010 for the course CH 301 taught by Professor Fakhreddine/lyon during the Fall '07 term at University of Texas.

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H13- Thermo 2-problems - goldstein (ddg625) – H13: Thermo...

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