Thermodynamics of Cadmium Sorption on Different Soils of West Bengal, India

Table 5

Thermodynamics variables on Cd sorption at reaction temperatures on experimental soils (data represent mean of tree replications ± SD).

Sample ID	Temperature (°C)	Thermodynamics variables
		𝐾^0𝑇	Δ𝐺^0𝑇 (kj mol^−1)	Δ𝐻^0 (kj mol^−1)	Δ𝑆^0𝑇 (j mol^−1)
S1	25	0.034±0.001	8.41±1.79	8.07±1.97	−1.15±0.78
	35	0.044±0.001	7.99±1.38		0.26±0.03
	45	0.053±0.001	7.76±1.09		0.96±0.01
S2	25	0.049±0.001	7.48±1.21	7.10±2.29	−1.26±0.12
	35	0.063±0.001	7.07±1.37		0.10±0.001
	45	0.079±0.001	6.71±1.41		1.24±0.61
S3	25	0.087±0.001	6.06±1.21	5.81±1.01	−0.82±0.002
	35	0.104±0.001	5.81±1.73		0.01±0.001
	45	0.123±0.001	5.54±1.91		0.86±0.17
S4	25	0.026±0.001	9.03±1.73	8.79±2.01	−0.82±0.02
	35	0.032±0.001	8.80±1.07		−0.03±0.001
	45	0.040±0.001	8.50±1.39		0.90±0.001
S5	25	0.021±0.001	9.63±2.12	9.44±1.07	−0.63±0.001
	35	0.024±0.001	9.51±1.01		−0.21±0.001
	45	0.031±0.001	9.16±2.09		0.89±0.03