The following data are available for the isothermal heat of mixing of trichloromethane (1) and ethanol (2) at 30°C [reference: J. P. Shatas, M. M. Abbott, and H. C. Van Ness, J. Chem. Eng. Data, 20, 406 (1975)].

Compute the partial molar enthalpies of trichloromethane and ethanol in their mixtures at 30°C over the whole composition range.

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1, Mole Fraction 0.0120 0.0183 0.0340 0.0482 0.0736 0.1075 0.1709 0.1919 0.2301 0.2636 0.2681 0.2721 0.3073 0.3221 0.3486 0.3720 0.3983 0.4604 0.4854 Amix H (J/mol) -68.8 -101.3 -179.1 -244.4 -344.6 -451.1 -565.3 -581.0 -585.0 -566.1 -561.9 -557.8 -519.6 -508.0 -468.5 -424.4 -369.1 -197.1 -135.4 1, Mole Fraction 0.5137 0.5391 0.5858 0.6172 0.6547 0.7041 0.7519 0.7772 0.7995 0.8239 0.8520 0.8784 0.8963 0.9279 0.9532 0.9778 0.9860 0.9971 Amix H (J/mol) -66.1 -1.9 117.1 186.5 266.9 360.3 436.6 470.5 495.9 510.0 515.8 505.3 486.0 420.5 329.2 184.7 123.3 25.1