Chemical elements
  Nitrogen
    Isotopes
    Energy
    Nitrogen Cycle
    Production
    Application
    Physical Properties
      Compressibility
      PV and temperature
      Specific Heats
      Viscosity
      Refractivity
      Spectra
      Solubility
      Liquid Nitrogen
      Solid Nitrogen
      Active Nitrogen
      Formation of Nitrides
      Atomic Weight
      Disintegration
    Chemical Properties
    Ammonia
    Hydroxylamine
    Hydrazine
    Azoimide
    Nitric Acid

Specific Heats of Nitrogen






The mean specific heats of pure nitrogen at constant pressure (1 atm.) have been determined at various temperatures given in the following table.

cp=specific heat at constant pressure.
Cp=molecular heat at constant pressure, i.e. cp=Mcp.

Specific and molar heats of gaseous nitrogen at constant pressure

t° c.cpCp
00.24916.98
1000.25017.01
2000.25107.03
3000.25207.06
4000.25297.09
5000.25397.11
6000.25487.14
7000.25587.17
8000.25677.19
9000.25777.22
10000.25867.25
11000.25967.27
12000.26057.30
13000.26157.33
14000.26247.35


The value of cp is given by the equation

cp = 0.2491 + 0.0000095t.

In the next table are given the molecular specific heats at constant volume and the ratio Cp/Cv.

Molar heats of gaseous nitrogen at constant volume, and ratio of the specific heats

t° C.Cvγ=Cp/Cv
04.8901.408
1004.9261.404
2004.9681.400
3005.0141.396
4005.0661.392
5005.1041.389
6005.1431.386
7005.1841.383
8005.2381.379
9005.2801.376
10005.3081.374


The thermal conductivity of the gas at 0° C. is 0.00005660, at 55° C. is 0.0000569, and at 100° C. is 0.0000718.


© Copyright 2008-2012 by atomistry.com