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The vapour pressures of saturated aqueous solutions of magnesium, calcium, nickel and zinc acetates and molar enthalpies of solution of magnesium, calcium, zinc and lead acetates

✍ Scribed by Alexander Apelblat; Eli Korin

Publisher: Elsevier Science
Year: 2001
Tongue: English
Weight: 66 KB
Volume: 33
Category: Article
ISSN: 0021-9614
DOI: 10.1006/jcht.2000.0731

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✦ Synopsis

Vapour pressures of water over saturated solutions of magnesium, calcium, nickel and zinc acetates were determined as a function of temperature. The vapour pressures served to evaluate the water activities, osmotic coefficients and molar enthalpies of vaporization. Molar enthalpies of solution of magnesium acetate tetrahydrate, sol H m (T = 294.71 K; m = 0.01 mol • kg -1 ) = -(15.65 ± 0.97) kJ • mol -1 ; calcium acetate, sol H m (T = 297.18 K; m = 0.01 mol • kg -1 ) = -(28.15 ± 0.28) kJ • mol -1 ; zinc acetate dihydrate, sol H m (T = 297.36 K; m = 0.01 mol • kg -1 ) = -(22.49 ± 0.90) kJ • mol -1 and lead acetate trihydrate, sol H m (T = 297.36 K; m = 0.0086 mol • kg -1 ) = (22.46 ± 0.94) kJ • mol -1 , were determined calorimetrically.

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