Physical Chemistry - Midterm 2007 Solved

Physical Chemistry - Midterm 2007 Solved - 1 of 5 CHM2132...

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

View Full Document Right Arrow Icon

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

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

Unformatted text preview: 1 of 5 CHM2132 Midterm Friday October 26 th , 2007 Name: _________________________________ Student #: _________________________________ This is a closed book exam with no notes allowed. Calculators are permitted. Write all the formulas that you use to solve the questions and show all your work. Remember to include units in all your calculations . Marks will be deducted if units are not shown. Constants and Data: R = 8.314 J K-1 mol-1 = 0.08206 L atm mol-1 K-1 = 0.08314 L bar mol-1 K-1 1 L =10-3 m 3 1 atm = 101325 Pa 1 L atm = 101.325 J 1 bar = 10 5 Pa M C 2 H 5 OH ( ) = 46.07 g mol-1 ¡ vap H m o C 2 H 5 OH ( ) = 43.5 kJ mol-1 ¡ f H m o C 2 H 5 OH(g) ( ) = ¢ 235.10 kJ mol-1 ¡ f H m o H 2 O(l) ( ) = ¢ 285.83 kJ mol-1 ¡ f H m o H 2 O(g) ( ) = ¢ 241.82 kJ mol-1 ¡ f H m o CO 2 ( g ) ( ) = ¢ 393.51 kJ mol-1 Formula sheet is on last page - this can be removed and does not have to be handed in. Q1: __________/4 Q2: __________/8 Q3: __________/ 23 Total = __________/ 35 2 of 5 Question 1: Indicate whether the following terms are state functions or path functions (4 marks): a) entropy STATE b) heat PATH c) heat capacity PATH d) Helmholtz energy STATE Question 2: 10 g of ethanol vapor (C 2 H 5 OH) is combusted under standard pressure at 298 K. a) What is the total enthalpy of combustion for this reaction? (6 marks) C 2 H 5 OH(g) + 3 O 2 (g) ¡ 2 CO 2 (g) + 3 H 2 O(l) 1 mark - CO 2 and H 2 O products of combustion, 1 mark - balanced correctly, 1 mark for proper...
View Full Document

This note was uploaded on 01/16/2011 for the course BIO 1130 taught by Professor Fenwick during the Fall '08 term at University of Ottawa.

Page1 / 5

Physical Chemistry - Midterm 2007 Solved - 1 of 5 CHM2132...

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

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