An Improved Flow Calorimeter. Experimental Vapor Heat Capacities and Heats of Vaporization of n-Heptane and 2,2,3-Trimethylbutane1

1947 ◽  
Vol 69 (1) ◽  
pp. 22-30 ◽  
Author(s):  
Guy Waddington ◽  
Samuel S. Todd ◽  
Hugh M. Huffman
Keyword(s):  
Heat Capacities ◽  
Flow Calorimeter ◽  
Heats Of Vaporization

Heats of vaporization and gaseous molar heat capacities of ethanol and the binary mixture of ethanol and benzene

1988 ◽  
Vol 66 (4) ◽  
pp. 783-790 ◽  
Author(s):  
Jin-Quan Dong ◽  
Rui-Sen Lin ◽  
Wen-Hsing Yen
Keyword(s):  
Binary Mixture ◽  
Entropy Change ◽  
Normal Pressure ◽  
Heat Capacities ◽  
Combined System ◽  
Pure Ethanol ◽  
Flow Calorimeter ◽  
Liquid Standard ◽  
Vaporization Calorimeter ◽  
Heats Of Vaporization

A combined system of the Newsham vaporization calorimeter and the Pitzer gaseous heat capacity flow calorimeter were reconstructed with modifications. Both calorimeters were calibrated with benzene, the liquid standard, and were found to be acceptable for measurements, with deviations of 0.4% and 0.9%, respectively. Heats of vaporization of pure ethanol under five pressures and binary mixtures of ethanol and benzene under normal pressure were determined. Gaseous molar heat capacities of pure ethanol under three pressures and of binary mixture of ethanol and benzene at two temperatures were also determined, with anomalies due to association noted. Association of ethanol molecules in the vapor phase was discussed and analyzed, with heats of association and entropy change of association calculated.

Heats of vaporization and gaseous heats of formation of some five- and six-membered ring alkenes

1979 ◽  
Vol 57 (17) ◽  
pp. 2302-2304 ◽  
Author(s):  
Richard Fuchs ◽  
L. Alan Peacock
Keyword(s):  
Gas Chromatography ◽  
Double Bond ◽  
Heat Capacities ◽  
Membered Ring ◽  
Heats Of Formation ◽  
Group Additivity ◽  
Liquid Heat ◽  
Heats Of Vaporization

The heats of vaporization of 1-methylcyclopentene, 3-methylcyclopentene, ethylidenecyclopentane, 1-ethylcyclopentene, methylenecyclohexane, allylcyclopentane, vinylcyclohexane, ethylidenecyclohexane, allylcyclohexane, 3,3-diethylpentane, 2,2,4,4-tetramethylpentane, and trans-2,2,5,5-tetramethyl-3-hexene have been measured by the gas chromatography – calorimetry method. These values have been combined with previously reported liquid heats of formation to give gaseous values of ΔHf. The results indicate that the internal double bond is favored by about 0.5 kcal over the exo in both 5- and 6-membered rings, but the endo–exo differences are much smaller than previously believed. Several of the liquid heat capacities that were measured were not well predicted by group additivity schemes.

The determination of isobaric heat capacities of liquid by the new flow calorimeter

2020 ◽  
Vol 690 ◽  
pp. 178644
Author(s):  
Yuxin Zheng ◽  
Chen Zhang ◽  
Haihua Liu
Keyword(s):  
Heat Capacities ◽  
Flow Calorimeter

Heat capacities of some organic liquids determined with the Picker flow calorimeter

1976 ◽  
Vol 8 (3) ◽  
pp. 289-299 ◽  
Author(s):  
Jean-Luc Fortier ◽  
George C. Benson ◽  
Patrick Picker
Keyword(s):  
Heat Capacities ◽  
Organic Liquids ◽  
Flow Calorimeter

High-pressure isobaric heat capacities using a new flow calorimeter

2008 ◽  
Vol 46 (3) ◽  
pp. 258-264 ◽  
Author(s):  
José J. Segovia ◽  
David Vega-Maza ◽  
César R. Chamorro ◽  
M. Carmen Martín
Keyword(s):  
High Pressure ◽  
Heat Capacities ◽  
Flow Calorimeter

scholarly journals A Set of Vapor-Flow Calorimeter and the Heat Capacities of Benzene and Benzene-Cyclohexane

1993 ◽  
Vol 9 (04) ◽  
pp. 542-547
Author(s):  
Ding Yi-Ming ◽  
◽  
Yu Qing-Sen ◽  
Lin Rui-Sen ◽  
Zong Han-Xing
Keyword(s):  
Heat Capacities ◽  
Vapor Flow ◽  
Flow Calorimeter
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