Register to reply

Constant Volume Specific Heat

by melanie
Tags: constant, heat, specific, volume
Share this thread:
Jun29-05, 10:15 PM
P: 1
Just trying to locate specific heat constants with constant volume (not pressure), any ideas where to find this?
Phys.Org News Partner Science news on
Scientists discover RNA modifications in some unexpected places
Scientists discover tropical tree microbiome in Panama
'Squid skin' metamaterials project yields vivid color display
Jun30-05, 12:06 AM
P: 114
If you have a thermodynamic set of property tables it would be in the column with Cv (v should be a subscript) if you are looking at Cp that is the specific heat at constant pressure. They should be fairly close in most non-extreme conditions so becareful what your looking at
Jun30-05, 01:24 AM
P: 541
[itex]C_p[/itex] : Specific Heat at constant pressure
[itex]C_v[/itex] : Specific Heat at constant volume

Also [itex]C_p - C_v = R[/itex]

[itex]\frac {C_p}{C_v} = lamda[/itex]

where lamda = [itex]1 + \frac {2}{f}[/itex]

Where f=degrees of freedon

for monoatomic gas , f=3
for diatomic gas , f=3

You can solve for two expressions at the top to get Cp


Jul1-05, 12:54 AM
P: 230
Constant Volume Specific Heat

One correction to Dr.Brain's post. f for diatomic gases is 5
Jul1-05, 01:45 AM
HW Helper
PF Gold
siddharth's Avatar
P: 1,197
Quote Quote by quark
One correction to Dr.Brain's post. f for diatomic gases is 5
And that's only at around room temperature's where the vibrational degree of freedom is absent. At high temperatures, f will be 7 for diatomic gases.

Register to reply

Related Discussions
Quantity of Heat/Specific Heat Water+Iron Introductory Physics Homework 3
Specific Heat and Phase Change/Latent Heat Problems PLEASE HELP Introductory Physics Homework 5
Heat Capacity of Air at Constant Volume Introductory Physics Homework 10
Specific Heat Constant Volume Question Classical Physics 6
Specific heat capacity and latent heat of fusion Introductory Physics Homework 4