2012 Study-Guide-2

# Heating cooling pa pb p pext constant only t and

This preview shows page 1. Sign up to view the full content.

This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: δqP (TRUE FOR ANY CONSTANT PRESSURE (ISOBARIC) PROCESS The following definitions apply to any system: # ∂U & CV = % ( \$ ∂T ' V # ∂H & CP = % ( \$ ∂T 'P # ∂U & # ∂p & π T = % ( = T% ( − p \$ ∂V ' T \$ ∂T ' V CP − C V = VTα 2 κT # ∂H & # ∂V & µ T = % ( = V − T% ( \$ ∂p ' T \$ ∂T ' p α= 1 # ∂V & %( V \$ ∂T ' p # ∂T & µ JT = % ( \$ ∂p ' H € Relationships between Δ H and Δ U Know how to obtain the following equations: ΔH = ΔU + nR ΔT (Heating or cooling of an ideal gas) ΔH = ΔU + RT Δng (Chemical reaction at constant temperature) ΔH = ΔU + p ΔV (any process at constant pressure) ΔH = ΔU + V Δp (any process at constant volume) 2 κT = −1# ∂V & %( V \$ ∂p ' T Transformations For n Moles of an Ideal Gas Between States A and B: Isochoric Heating / Cooling: VA = VB (Only T and p vary) pA / TA = pB / TB ΔU = CV (TB - TA) = n CVm (TB - TA) ΔH = CP (TB - TA) = n CPm (TB - TA) q = ΔU w = 0 Isobaric Heating / Cooling: pA = pB (p = pext = constant) (Only T and V vary) VA / TA = VB / TB Δ...
View Full Document

## This note was uploaded on 01/26/2014 for the course CHEM 3615 taught by Professor Aresker during the Spring '07 term at Virginia Tech.

Ask a homework question - tutors are online