This preview shows pages 1–3. Sign up to view the full content.
This preview has intentionally blurred sections. Sign up to view the full version.View Full Document
Unformatted text preview: 1 Energy, Enthalpy, and Thermochemistry Todays Lecture 9.3 Thermodynamics of Ideal Gases 1 Thermodynamics of Ideal Gases recall from Chapter 5 that for an ideal gas RT 3 (KE) avg = where (KE) avg represents the average, random, translational energy for 1 mole of an ideal gas at a given temperature (in Kelvin) thus, the only way to change the KE of an ideal gas is to change its temperature RT 2 (KE) avg 2 change its temperature the energy (heat) required to change the energy of 1 mole of an ideal gas by T is : T R 2 3 required ) heat" (" Energy = 2 Molar Heat Capacity of Ideal Gases the molar heat capacity of a substance is defined as the energy required to raise the temperature of 1 mole of that substance by 1K does that mean that the molar heat capacity of an ideal gas is 3/2R? constant volume molar heat capacity (C v ) of an ideal gas: heating an ideal gas in a rigid container ( V = 0) R 3 C v = 3 constant pressure molar heat capacity of an ideal gas (C...
View Full Document