Practice Final Blank 2001

# Practice Final Blank 2001 - 1. (6 pts) Given the following...

This preview shows pages 1–3. Sign up to view the full content.

1 1. (6 pts) Given the following data at 25 o C: 2 O 3 (g) —> 3 O 2 (g) H o = – 427 kJ O 2 (g) —> 2 O (g) H o = 495 kJ NO (g) + O 3 (g) —> NO 2 (g) + O 2 (g) H o = – 199 kJ Calculate H o for the following reaction at 25 o C: NO (g) + O (g) —> NO 2 (g) 2. (12 pts) Write the reactions that correspond to the following enthalpy changes: a) H f o for solid aluminum oxide. b) The standard enthalpy of neutralization of aqueous sodium hydroxide and hydrochloric acid. c) H f o for gaseous vinyl chloride, C 2 H 3 Cl. d) The enthalpy of solution of solid ammonium bromide. 3. (10 pts) Using the following data: H f o (kJ /mol) S o (J K –1 mol –1 ) N 2 O 5 (g) 11.29 355.3 NO 2 (g) 33.15 239.9 O 2 (g) 0 204.8 Above what temperature is the following reaction spontaneous? 2 N 2 O 5 (g) —> 4 NO 2 (g) + O 2 (g).

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
2 4. A sample of pure solid naphthalene (C 10 H 8 ) weighing 0.6410 g is burned completely with oxygen to produce CO 2 (g) and H 2 O (l) in a constant volume calorimeter at 25 o C. The amount of heat released is measured to be 25.79 kJ. a) (4 pts) Write and balance the equation for the combustion reaction. b) (4 pts) Calculate the standard change in internal energy, ∆Ε ο , for the combustion of 1.00 mol naphthalene to produce CO 2 (g) and H 2 O (l). c) (4 pts) Calculate the standard change in enthalpy, ∆Η ο , for the combustion of 1.00 mol naphthalene to produce CO 2 (g) and H 2 O (l).
This is the end of the preview. Sign up to access the rest of the document.

## Practice Final Blank 2001 - 1. (6 pts) Given the following...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online