Chem2080 2010 Prelim1 - Page Page 1 of 6 Chemistry 2080 -...

Info iconThis preview shows pages 1–4. Sign up to view the full content.

View Full Document Right Arrow Icon
of 6 Page 1 of 6 Chemistry 2080 - Spring 2010 Prelim #1 Tuesday March 2nd, 7:30 to 9:00 pm Name: _____________________________________ CU ID: ____________________ Last First M.I. Lab: _______________________________ Lab TA Name: __________________ Day Time Instructions: Answer all questions in the spaces provided. You have 90 minutes. You must show all work for full credit. There are 6 pages in this exam, and there is also a separate equation sheet. There are 5 questions; the points for each are indicated below. 1. _____________/20 2. _____________/20 3. _____________/20 4. _____________/20 5. _____________/20 Total _____________/100
Background image of page 1

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

View Full DocumentRight Arrow Icon
of 6 Page 2 of 6 1) (20 points) (a) Write a balanced equation for the combustion of liquid cyclohexane (C 6 H 12 ) in oxygen to give gaseous carbon dioxide and liquid water. (b) The standard enthalpy change for this combustion reaction at 25°C and 1 atm pressure is – 3,920 kJ/mol of cyclohexane. Use this figure to calculate the standard enthalpy of formation ( Δ f ) of liquid cyclohexane at 25°C and 1 atm pressure. Note that Δ f for H 2 O(l) = –285.8 kJ/mol, Δ f for H 2 O(g) = –241.8 kJ/mol, and Δ f for CO 2 (g) = –393.5 kJ/mol, all at 25°C.
Background image of page 2
of 6 Page 3 of 6 2) (20 points) Acetoacetic acid, CH 3 COCH 2
Background image of page 3

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

View Full DocumentRight Arrow Icon
Image of page 4
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 03/02/2011 for the course CHEM 2080 taught by Professor Davis,f during the Spring '07 term at Cornell University (Engineering School).

Page1 / 6

Chem2080 2010 Prelim1 - Page Page 1 of 6 Chemistry 2080 -...

This preview shows document pages 1 - 4. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online