09 ReviewEx01 - Is your relationship as stable as a diamond...

Info iconThis preview shows pages 1–6. Sign up to view the full content.

View Full Document Right Arrow Icon
1 Is your relationship as stable as a diamond engagement ring? C(diamond) C(graphite) What is G o reaction for the decomposition of diamond? G o f (diamond) = 2.9 kJ/mol G o f (graphite) = 0.0 kJ/mol A) + 2.9 kJ/mol B) – 2.9 kJ/mol 2 Solution C(diamond) C(graphite) What is G o reaction for the decomposition of diamond? G o f (diamond) = 2.9 kJ/mol G o f (graphite) = 0.0 kJ/mol G o = Σ G o f (products) – Σ G o f (reactants) = 0.0 – (2.9 kJ/mol) = -2.9 kJ/mol G o < 0, Diamond spontaneously decomposes into graphite under standard conditions. The process is very very slow because of a high activation energy. Diamond is thermodynamically unstable, but kinetically stable. Can do a similar calculation for H o and S o using data in MSJ Appendix J.
Background image of page 1

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

View Full DocumentRight Arrow Icon
3 Solar ID Room 000000000 - 106247114 Javits 100 main floor 106247115 - 106538502 Javits 100 balcony 106538503 - 106593323 Earth & Space Science 001 106593324 - 106631711 Old Chemistry 116 106631712 - 106658152 Javits 102 106658153 - 106701719 Javits 110 106701720 - 106739961 Harriman 137 106739962 - 106794126 Engineering 143 106794127 - 106919877 Engineering 145 106919878 - 999999999 Javits 101 Room Assignments for Exam 1 Monday, February 16 th , 8:30 – 10:00 PM 4 Bring your Stony Brook ID card, 2 or more #2 pencils, a good eraser, and a calculator with spare batteries. Do NOT bring any cell phones, beepers, iPods, or other communication devices, or a textbook, notes, or any aids to taking the exam. Violations may result in a course grade of F and a report to the Academic Judiciary. Personal belongings must be placed out of sight under your seat, not on the seat next to you. You should fill out the Scantron form and read the cover sheet when you sit down, but you should not open the exam until instructed to begin. You will have 90 minutes to complete the exam. No one is permitted to leave the exam before 9:15 PM. Exam Rules
Background image of page 2
5 Review for Exam 1: Thermodynamics Thermodynamics is the area of science concerned with the relationship between heat and work. Thermodynamics reveals what is possible and what is impossible in terms of energy. Two issues to review: What are the big ideas in thermodynamics? How do you apply your understanding of the big ideas to solving problems? 6 What are the 4 big ideas in Thermodynamics? Energy Enthalpy Entropy Gibb’s Free Energy
Background image of page 3

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

View Full DocumentRight Arrow Icon
7 Energy: What is it? A fundamental component of the Universe. A quantity that keeps track of the ability to do work. Something no one really understands. 8 Energy E sys = q sys + w sys & E sur = q sur + w sur always means final - initial q = heat (the thermal energy transferred as a result of a temperature difference). w = work (the energy transferred as a result of a displacement or deformation, i.e. force moving something some distance). E sys + E sur = 0 by conservation of energy. Consider q > 0, q < 0, w > 0, w < 0.
Background image of page 4
9 Enthalpy: What is it? Where does this idea come form?
Background image of page 5

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

View Full DocumentRight Arrow Icon
Image of page 6
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 02/13/2011 for the course CHE 132 taught by Professor Hanson during the Spring '08 term at SUNY Stony Brook.

Page1 / 22

09 ReviewEx01 - Is your relationship as stable as a diamond...

This preview shows document pages 1 - 6. Sign up to view the full document.

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