Ideal gas $c_p(T)$ polynomials for various fluids¶

For the polynomial

$c_p = a + bT + cT^2 + dT^3,$

the values of $(a,b,c,d)$ are tabulated below. Note that $T$ is in K, and $c_p$ is in J/mol/K. This table is originally located at http://www.wiley.com/college/moran/CL_0471465704_S/user/tables/TABLE3S/table3sframe.html. It has been reproduced here for the sake of posterity.

Substance	a	b	c	d	e		Error (%)
Substance	a	b	c	d	e	Range (K)	Max.	Avg.
Nitrogen	N2	28.9	-0.1571 X 10-2	0.8081 X 10-5	-2.873 X 10-9	273-1800	0.59	0.34
Oxygen	O2	25.48	1.520 X 10-2	-0.7155 X 10-5	1.312 X 10-9	273-1800	1.19	0.28
Air		28.11	0.1967 X 10-2	0.4802 X 10-5	-1.966 X 10-9	273-1800	0.72	0.33
Hydrogen	H2	29.11	-0.1916 X 10-2	0.4003 X 10-5	-0.8704 X 10-9	273-1800	1.01	0.26
Carbon monoxide	CO	28.16	0.1675 X 10-2	0.5372 X 10-5	2.222 X 10-9	273-1800	0.89	0.37
Carbon dioxide	CO2	22.26	5.981 X 10-2	-3.501 X 10-5	7.469 X 10-9	273-1800	0.67	0.22
Water vapor	H2O	32.24	0.1923 X 10-2	1.055 X 10-5	-3.595 X 10-9	273-1800	0.53	0.24
Nitric oxide	NO	29.34	-0.09395 X 10-2	0.9747 X 10-5	-4.187 X 10-9	273-1500	0.97	0.36
Nitrous oxide	N2O	24.11	5.8632 X 10-2	-3.562 X 10-5	10.58 X 10-9	273-1500	0.59	0.26
Nitrogen dioxide	NO2	22.9	5.715 X 10-2	-3.52 X 10-5	7.87 X 10-9	273-1500	0.46	0.18
Ammonia	NH3	27.568	2.5630 X 10-2	0.99072 X 10-5	-6.6909 X 10-9	273-1500	0.91	0.36
Sulfur	S2	27.21	2.218 X 10-2	-1.628 X 10-5	3.986 X 10-9	273-1800	0.99	0.38
Sulfur dioxide	SO2	25.78	5.795 X 10-2	-3.812 X 10-5	8.612 X 10-9	273-1800	0.45	0.24
Sulfur trioxide	SO3	16.4	14.58 X 10-2	-11.20 X 10-5	32.42 X 10-9	273-1300	0.29	0.13
Acetylene	C2H2	21.8	9.2143 X 10-2	-6.527 X 10-5	18.21 X 10-9	273-1500	1.46	0.59
Benzene	C6H6	-36.22	48.475 X 10-2	-31.57 X 10-5	77.62 X 10-9	273-1500	0.34	0.2
Methanol	CH4O	19	9.152 X 10-2	-1.22 X 10-5	-8.039 X 10-9	273-1000	0.18	0.08
Ethanol	C2H6O	19.9	20.96 X 10-2	-10.38 X 10-5	20.05 X 10-9	273-1500	0.4	0.22
Hydrogen chloride	HCl	30.33	-0.7620 X 10-2	1.327 X 10-5	-4.338 X 10-9	273-1500	0.22	0.08
Methane	CH4	19.89	5.024 X 10-2	1.269 X 10-5	-11.01 X 10-9	273-1500	1.33	0.57
Ethane	C2H6	6.9	17.27 X 10-2	-6.406 X 10-5	7.285 X 10-9	273-1500	0.83	0.28
Propane	C3H8	-4.04	30.48 X 10-2	-15.72 X 10-5	31.74 X 10-9	273-1500	0.4	0.12
n-Butane	C4H10	3.96	37.15 X 10-2	-18.34 X 10-5	35.00 X 10-9	273-1500	0.54	0.24
i-Butane	C4H10	-7.913	41.60 X 10-2	-23.01 X 10-5	49.91 X 10-9	273-1500	0.25	0.13
n-Pentane	C5H12	6.774	45.43 X 10-2	-22.46 X 10-3	42.29 X 10-9	273-1500	0.56	0.21
n-Hexane	C6H14	6.938	55.22 X 10-2	-28.65 X 10-5	57.69 X 10-9	273-1500	0.72	0.2
Ethylene	C2H4	3.95	15.64 X 10-2	-8.344 X 10-5	17.67 X 10-9	273-1500	0.54	0.13
Propylene	C3H6	3.15	23.83 X 10-2	-12.18 X 10-5	24.62 X 10-9	273-1500	0.73	0.17

Ideal gas polynomials for various fluids¶

Ideal gas $c_p(T)$ polynomials for various fluids¶