Table 5 Activation parameters for dissolution of CS in 1 M HCl in the absence and with altered amounts of HCA &BHCA.
Inhibitor | Conc., ppm | Kinetic Activation parameters | ||
|---|---|---|---|---|
Ea* kJ mol−1 | −ΔH* kJ mol−1 | −ΔS* J mol−1 K−1 | ||
Blank | 0.0 | 62.6 | 60.0 | 85.8 |
HCA | 10 | 71.9 | 69.7 | 82.8 |
20 | 73.5 | 70.8 | 63.1 | |
30 | 74.3 | 71.2 | 61.9 | |
40 | 74.9 | 72.3 | 61.4 | |
50 | 75.5 | 73.4 | 59.6 | |
60 | 77.4 | 74.7 | 59.2 | |
BHAC | 10 | 73.5 | 70.9 | 80.9 |
20 | 74.4 | 71.8 | 58.8 | |
30 | 75.3 | 72.7 | 58.4 | |
40 | 76.2 | 73.6 | 56.8 | |
50 | 77.5 | 74.9 | 55.8 | |
60 | 79.1 | 76.5 | 55.9 | |
