Salicylic acid is similar in structure to aspirin. Shalmashi et al. have measured the data in Table 14.5.

(a) Find the value of α for salicylic acid in water that best correlates the data, assuming β = 0.

(b) Predict the solubility of the acid in ethanol.

(c) Plot log(x_acid) versus 1000/T including correlated and measured values.

(d) Plot all the calculated versus experimental values. This is known as a parity plot.

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Table 14.5 Solubility of Salicylic Acid in Various Solvents. Compositions in Weight% 35 55 0.35 0.74 38.51 47.79 0.49 1.26 23.58 30.10 1.10 2.70 Solvent\T(°C) Water Ethanol Ethyl Acetate Carbon Tetrachloride p-Xylene 25 0.22 32.54 0.30 20.08 0.62 45 0.54 42.74 0.77 26.92 1.75 65 1.16 52.52 1.80 33.47 4.01 75 1.71 56.98 2.50 36.92 5.78