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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.
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