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Thermodynamics of HCl in water—ethylene carbonate mixtures

✍ Scribed by A.A. El-Harakany; H. Sadek; A.M. Abdou

Publisher
Elsevier Science
Year
1981
Tongue
English
Weight
634 KB
Volume
26
Category
Article
ISSN
0013-4686

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✦ Synopsis

The em/ of the cell: Pt; Hz (1 atm.]/HCI(m), Ethylene carbonate (x), Hz0 (lWx)/AgCl, Ag is measured at 5" interval in the temperature range 25 to 45°C. The standard potential of the silversilver chloride electrode, E;, is determined in each solvent mixture covering the range O-78 o? EC. The temperature coefficient is calculated using the method of least squares. The meatt activity eoefficiemt of HCI, y et?' is determined for molalities between 0.01 and 0.05 m in each case. The primary, secondary and total m iurn effects are calculated. From the variation of the mean activity coefficient with temperature, the relative Partial molal heat content r, of HCI is computed.& Passes through a minimum at 30 % for 0.05 m HCI at all temperatures. The effect of temperature on L, Permits the evaluation of the corresponding relative Partial molal specific heat f,.

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