A Thermodynamics Study on the Tetrahydrofuran Effect in Exfoliated Graphite Nanoplatelets and Activated Carbon Mixtures at Temperatures between 293.15 and 308.15 K

Table 9

Fitting parameters A_i and correlation coefficient R² obtained for density , speed of sound c, refractive index n_D, isentropic compressibility k_S, and relaxation strength r along with the absolute average percentage deviation (AAD%) for binary AC + THF mixtures.^a

T (K)	C (kg·m^−3)	A1 (kg·m^−3)	A2 (kg^0·m^0)	A3 (kg^−1·m^3)	R^2	AAD%
(kg·m^−3)
293.15	0–100	887.62	0.0021304	0.0000031	0.99401	0.008
298.15	0–100	882.17	0.0014464	0.0000098	0.99356	0.009
303.15	0–100	876.64	0.0024750	0.0000027	0.99821	0.009
308.15	0–100	871.14	0.0014446	0.0000103	0.99775	0.009
T (K)	C (kg·m^−3)	A1 (kg^0·m^−1·s)	A2 (kg·m^−4·s)	A3 (kg^2·m^−7·s)	R^2	AAD%
c (m·s^−1)
293.15	0–100	1303.65	−0.003539	0.000053	0.98967	0.005
298.15	0–100	1279.39	0.003134	0.000002	0.99545	0.008
303.15	0–100	1255.25	0.002302	0.000010	0.99115	0.009
308.15	0–100	1231.10	0.004171	0.000004	0.99825	0.011
T (K)	C (kg·m^−3)	A1	A2·10^5	A3·10^7	R^2	AAD%
nD
293.15	0–100	1.40731	−0.000000087	0.000000004	0.98483	0.0001
298.15	0–100	1.40464	0.000000652	−0.000000002	0.98661	0.0001
303.15	0–100	1.40198	0.000000795	−0.000000002	0.99235	0.0001
308.15	0–100	1.39932	0.000001282	−0.000000006	0.97686	0.0002
T (K)	C (kg·m^−3)	A1 (10^−9·kg^0·m^2·N^−1)	A2 (10^−9·kg^−1·m^5·N^−1)	A3 (10^−9·kg^−2·m^8·N^−1)	R^2	AAD%
kS (10^10·m^2·N^−1)
293.15	0–100	6.62902	0.000020166	−0.000000559	0.99868	0.001
298.15	0–100	6.92543	−0.000045489	−0.000000099	0.99601	0.001
303.15	0–100	7.23971	−0.000046995	−0.000000141	0.99739	0.001
308.15	0–100	7.57399	−0.000064004	−0.000000131	0.99836	0.001
T (K)	C (kg·m^−3)	A1 (kg^0·m^0)	A2 (kg^−1·m^3)	A3 (kg^−2·m^−6)	R^2	AAD%
r
293.15	0–100	0.33613	0.000003539	−0.000000053	0.98967	0.002
298.15	0–100	0.36061	−0.000003134	−0.000000002	0.99545	0.002
303.15	0–100	0.38451	−0.000002366	−0.000000008	0.99004	0.003
308.15	0–100	0.40797	−0.000004043	−0.000000004	0.99899	0.001

^aA_i and R² were obtained from (2).