Browsing by Author "Ahmed, Akhlaq"

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    Complex-formation between Carbon Tetrachloride and Alkyl-substituted Benzenes
    (Journal of the Chemical Society : Faraday Transaction - I. The Chemical Society, London. 1973, 69 (3), 1973) Ahmed, Akhlaq
    Measurements of the enthalpies of mixing are presented for equimolar mixtures of carbon tetrachloride with ethylbenzene, cumene, and t-butylbenzene at temperature between 288.00 and 352.96 K. Enthalpies of mixing are also presented for carbon tetrachloride and ethylbenzene over a wide range of composition at 337.97 K at which point the enthalpy of mixing changes sign for an equimolar mixture. A double maximum is obtained in the curve of enthalpy of mixing against the mole fraction of carbon tetrachloride. The results are understood in terms of a simple theory of complex-formation.
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    Enthalpy of Mixing of n-Hexane and Cyclohexane
    (Journal of the Chemical Society : Faraday Transaction - I. The Chemical Society, London. 1973, 69 (2), 1973) Ahmed, Akhlaq
    The enthalpy of mixing (HE) was measured for the liquids n-hexane and cyclohexane at 298.03 K. HE was corrected to 298.15 K for comparison with the results of other workers. The values of HE are well established with an uncertainty of about ± 1.5 J mol–1 by the several sets of recent measurements. In view of the reproducibility of these measurements and of the small temperature-coefficient, this system can be recommended as an international standard for checking mixing calorimeters.