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Citation: Dai Ming, Chao Jianping. HEATS OF MIXING OF THE PARTIALLY MISCIBLE LIQUID SYSTEM CYCLOHEXANE+METHANOL[J]. Acta Physico-Chimica Sinica, ;1985, 1(04): 301-303. doi: 10.3866/PKU.WHXB19850401 shu

HEATS OF MIXING OF THE PARTIALLY MISCIBLE LIQUID SYSTEM CYCLOHEXANE+METHANOL

Dai Ming ,
Chao Jianping

1.
Research Laboratory of Solution Chemistry, Henan Institute of Chemistry, Zheng Zhou

Received Date: 17 January 1985
Available Online: 15 August 1985

The molar excess enthalpies of cyclohexane+methanol were systematically measured with a Picker flow microcalorimeter operated in discontinuous mode at 298.15 303.15, 308.15, 313.15, 318.15 and 323.15 K. Our values are higher than the literature data. This work shows that the molar excess enthalpies increase with tem- perature, and the straight segments of the excess enthalpy curves in the mid become shorter with the increasing of temperature. At 323.15 K the sample becomes one of a miscible liquid system, and the position of themaximum value of molar excess enthalpies is at x=0.6. In addition, the calorimetric measurement can be used to determine the compositions of two immiscible phases for the binary mixture.
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