Basic Principles and Calculations in Chemical Engineering, 9th Edition

Appendix FHeat Capacity Equations

Table F.1 Heat Capacity Equations for Organic and Inorganic Compounds (at Low Pressures)^*

Forms:	(1)Cpo=a+b(T)+c(T)2+d(T)3;(2)Cpo=a+b(T)+c(T)−2. Units of Cpo are J/(g mol)(K or °C). To convert to cal/(g mol)(K or °C) = Btu/(lb mol)(°R or °F), multiply by 0.2390.
Note: b · 102 means the value of b is to be multiplied by 10–2, e.g., 20.10 × 10–2 for acetone.

Compound	Formula	Mol. Wt.	State	Form	T	a	b · 102	c · 105	d · 109	Temp. (in T)
Acetone	CH3COCH3	58.08	g	1	°C	71.96	20.10	−12.78	34.76	0−1200
Acetylene	C2H2	26.04	g	1	°C	42.43	6.053	−5.033	18.20	0−1200
Air	29.0	g	1	°C	28.94	0.4147	0.3191	−1.965	0−1500
g	1	K	28.09	0.1965	0.4799	−1.965	273−1800
Ammonia	NH3	17.03	g	1	°C	35.15	2.954 ...