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Heat capacity and density of methylpyrrolidone solutions of sodium and potassium perchlorates at different concentrations and 298.15 K |
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| Authors: | A N Novikov |
| Institution: | (1) Neurosurgical Department, Shin Kong Wu Ho-Su Memorial Hospital, No.95, Wen Chang Road, Shih Lin District, Taipei, Taiwan;(2) Graduate Institute of Cell and Molecular Biology, Graduate Institute of Medical Science, School of Medicine, Taipei Medical University, 250 Wu Hsing St., Taipei, 110, Taiwan;(3) College of Pharmacy, Taipei Medical University, 250 Wu Hsing St., Taipei, 110, Taiwan;(4) Department of Physiology, School of Medicine, Taipei Medical University, 250 Wu Hsing St., Taipei, 110, Taiwan;(5) Department of Internal Medicine, School of Medicine, Taipei Medical University, 250 Wu Hsing St., Taipei, 110, Taiwan; |
| Abstract: | The heat capacity and density of solutions of sodium and potassium perchlorates in N-methylpyrrolidone (MP) at 298.15 K were studied by calorimetry and densimetry. The standard partial molar heat capacities $ \bar C_{p2}^ \circ $ \bar C_{p2}^ \circ and volumes $ \bar V_2^ \circ $ \bar V_2^ \circ of NaClO4 and KClO4 in MP were calculated. The standard heat capacities $ \bar C_{pi}^ \circ $ \bar C_{pi}^ \circ and volumes $ \bar V_i^ \circ $ \bar V_i^ \circ of the perchlorate ion in an MP solution at 298.15 K were determined. The results are discussed with allowance for the specifics of solvation in the solutions of the salts under study. The coordination number of the ClO4− ion in an MP solution at 298.15 K was calculated. |
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