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.

c_p=specific heat at constant pressure.
C_p=molecular heat at constant pressure, i.e. c_p=Mc_p.

Specific and molar heats of gaseous nitrogen at constant pressure

t° c.	cp	Cp
0	0.2491	6.98
100	0.2501	7.01
200	0.2510	7.03
300	0.2520	7.06
400	0.2529	7.09
500	0.2539	7.11
600	0.2548	7.14
700	0.2558	7.17
800	0.2567	7.19
900	0.2577	7.22
1000	0.2586	7.25
1100	0.2596	7.27
1200	0.2605	7.30
1300	0.2615	7.33
1400	0.2624	7.35

The value of c_p is given by the equation

c_p = 0.2491 + 0.0000095t.

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

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

t° C.	Cv	γ=Cp/Cv
0	4.890	1.408
100	4.926	1.404
200	4.968	1.400
300	5.014	1.396
400	5.066	1.392
500	5.104	1.389
600	5.143	1.386
700	5.184	1.383
800	5.238	1.379
900	5.280	1.376
1000	5.308	1.374

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.