The Effect of Achyranthes aspera Extracts on Mild Steel Corrosion in Industrial Water Medium

Table 3

Thermodynamic adsorption parameters for adsorption of AA extracts on MS in industrial water medium at different temperatures from Langmuir adsorption isotherm.

Temperature (K)	𝑅^2	𝐾ads (L g^−1)	Δ𝐺ads; (kJ mol^−1)	Δ𝐻ads (kJ mol^−1)	Δ𝑆ads (J mol^−1 K^−1)	Δ𝐺ads=Δ𝐻ads−𝑇Δ𝑆ads (kJ mol^−1)
303	0.983	4310.34	−31.20			−30.26
313	0.981	3816.79	−31.91	−11.98^a; −12.11^b	63.58^a; 63^b	−30.90
323	0.977	3448.27	−32.66			−31.53
333	0.970	2762.43	−33.06			−32.17

aValues obtained from (7). bValues obtained from (8).