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Apparent and partial molar heat capacities and volumes of aqueous adipic acid, l-tartaric acid, and their sodium salts atT =  298.15 K

✍ Scribed by Wei Xie; Peter R. Tremaine

Publisher
Elsevier Science
Year
2000
Tongue
English
Weight
129 KB
Volume
32
Category
Article
ISSN
0021-9614

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✦ Synopsis

Apparent molar heat capacities and volumes have been determined at T = 298.15 K for aqueous solutions of adipic acid (H 2 A, A = C 6 H 8 O 4 ), sodium hydrogen adipate (NaHA), and a buffer solution of NaHA and Na 2 A; and for aqueous solutions of L-tartaric acid (H 2 T, T = C 4 H 4 O 6 ), a buffer solution of H 2 T and NaHT, a buffer solution of NaHT and Na 2 T, and a solution of sodium L-tartrate (Na 2 T). The experimental results have been analysed by using a simple extended Debye-HΓΌckel equation, to derive the partial molar properties of aqueous adipic acid, L-tartaric acid and their corresponding sodium salts at infinite dilution, and the standard partial molar volume and heat capacity changes for the ionization of adipic acid and L-tartaric acid.

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