Thermo_1.docx

# Thermo_1.docx - BIOL 7110 / 4105 / CHEM 8901 / 4804...

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

- 1 - BIOL 7110 / 4105 / CHEM 8901 / 4804 THERMODYNAMICS – I 1. Thermodynamic Quantities V Volume liters or cm 3 P Pressure atmospheres T Temperature Kelvin 273.15 K = 0 o C n Number of particles Moles (mol) N 0 Avogadro's number N 0 = 6.022 x 10 23 mol -1 (6.022 x 10 23 molecules/mole) k Boltzmann's constant k = 1.38 x 10 -23 J/K (joules/Kelvin) R = N 0 k Gas constant R = 8.314 joules/(mol . K) = 1.987 cal/(mol . K) F Faraday constant F = 96.48 kJ/(V . mol) E Internal energy kJ/mol or kcal/mol Q Heat kJ/mol or kcal/mol W Work kJ/mol or kcal/mol H Enthalpy kJ/mol or kcal/mol S Entropy J/(mol . K) or cal/(mol . K) Free Energy kJ/mol or kcal/mol 1 cal = 41.3 cm 3. atm 1 cal = 4.18 joule The nutrition calorie is 1 Cal (big calorie) 1 Cal = 1000 cal = 1 kcal At T = 0 o C and P = 1 atm, 1 mole of gas has V = 22.4 liters = 22,400 cm 3 DO NOT MEMORIZE PHYSICAL CONSTANTS! EXCEPTION: at 300 K, thermal energy RT = 2.5 kJ/mol = 0.6 kcal/mol AND: you do need to memorize the numbered equations NOTE - Different authors use different abbreviations for internal energy, either E or U. - - - - - - - - - - - - - - - - - - - - - - - - - - - - Thermodynamics tells us whether or not a physical or chemical process is possible. Thermodynamics does not tell us the rate at which a process will actually proceed.

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

View Full Document
- 2 - 2. Internal Energy and the First Law of Thermodynamics Internal energy is the sum of kinetic and potential energy E = E kin + E pot (Internal energy is sometimes abbreviated U, and sometimes E.) Total kinetic energy of all atoms is
This is the end of the preview. Sign up to access the rest of the document.

## This note was uploaded on 09/22/2011 for the course BIOL 7110 taught by Professor Steveharvey during the Spring '11 term at Georgia Institute of Technology.

### Page1 / 4

Thermo_1.docx - BIOL 7110 / 4105 / CHEM 8901 / 4804...

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

View Full Document
Ask a homework question - tutors are online