Effect of Dissolved Cadmium Chloride and Ammonium Chloride Salts on the Enthalpy of Mixing of the Methanol+Benzene System at 303.15 K

›› 2010, Vol. 18 ›› Issue (6): 995-999.

Effect of Dissolved Cadmium Chloride and Ammonium Chloride Salts on the Enthalpy of Mixing of the Methanol+Benzene System at 303.15 K

TAMILARASAN Rengasamy¹, ANAND PRABU Arun², KAP JIN Kim³, DHARMENDIRA KUMAR Mahendradas⁴

1. Department of Chemistry, School of Advanced Sciences, Vellore Institute of Technology University, Vellore 632014, India;
2. Department of Chemistry, School of Advanced Sciences, Vellore Institute of Technology University, Vellore 632014, India;
3. Department of Advanced Materials Engineering for Information & Electronics, College of Engineering, Kyung Hee University, Yongin-si, Gyeonggi-do 446-701, South Korea;
4. Department of Chemical Engineering, Alagappa Chettiar College of Technology, Anna University, Chennai 600025, India

收稿日期:2010-02-11 修回日期:2010-08-25 出版日期:2010-12-28 发布日期:2010-12-28
通讯作者: KAP JIN Kim, E-mail: kjkim@khu.ac.kr;DHARMENDIRA KUMAR Mahendradas, E-mail: mdkumar@annauniv.edu
基金资助:
Supported by Basic Science Research Program through the National Research Foundation of Korea(NRF);funded by the Ministry of Education,Science and Technology(R11-2005-065);DST-SERC,New Delhi,India(100/IFD/9726/2009-2010 dated 2/2/2010)

Effect of Dissolved Cadmium Chloride and Ammonium Chloride Salts on the Enthalpy of Mixing of the Methanol+Benzene System at 303.15 K

TAMILARASAN Rengasamy¹, ANAND PRABU Arun², KAP JIN Kim³, DHAR-MENDIRA KUMAR Mahendradas⁴

1. Department of Chemistry, School of Advanced Sciences, Vellore Institute of Technology University, Vellore 632014, India;
2. Department of Chemistry, School of Advanced Sciences, Vellore Institute of Technology University, Vellore 632014, India;
3. Department of Advanced Materials Engineering for Information & Electronics, College of Engineering, Kyung Hee University, Yongin-si, Gyeonggi-do 446-701, South Korea;
4. Department of Chemical Engineering, Alagappa Chettiar College of Technology, Anna University, Chennai 600025, India

Received:2010-02-11 Revised:2010-08-25 Online:2010-12-28 Published:2010-12-28
Supported by:
Supported by Basic Science Research Program through the National Research Foundation of Korea(NRF);funded by the Ministry of Education,Science and Technology(R11-2005-065);DST-SERC,New Delhi,India(100/IFD/9726/2009-2010 dated 2/2/2010)

摘要/Abstract

摘要： The effect of two dissolved inorganic salts,cadmium chloride CdCl₂ and ammonium chloride NH₄Cl,on the excess enthalpy of mixing(H^E) of the binary system methanol + benzene measured at 303.15 K using an isothermal displacement calorimeter with vapor space is investigated in the present work. Compared to the salt-free system,a decreasing trend in the endothermicity of H^E values is significant with the addition of CdCl₂ salt but the decrease in the H^E values is insignificantly smaller with the addition of NH₄Cl salt. The experimental values of the enthalpy of mixing are fitted into a Redlich-Kister equation and the deviations in the values and the parameters are reported. The importance of the solute-solvent interactions and the solvent-solvent interactions are demonstrated from the increasing excess enthalpy of mixing values in the positive direction with the increase of salt concentration.

关键词: salt effect, enthalpy of mixing, displacement calorimeter, methanol-benzene, Redlich-Kister equation

Abstract: The effect of two dissolved inorganic salts,cadmium chloride CdCl₂ and ammonium chloride NH₄Cl,on the excess enthalpy of mixing(H^E) of the binary system methanol + benzene measured at 303.15 K using an isothermal displacement calorimeter with vapor space is investigated in the present work. Compared to the salt-free system,a decreasing trend in the endothermicity of H^E values is significant with the addition of CdCl₂ salt but the decrease in the H^E values is insignificantly smaller with the addition of NH₄Cl salt. The experimental values of the enthalpy of mixing are fitted into a Redlich-Kister equation and the deviations in the values and the parameters are reported. The importance of the solute-solvent interactions and the solvent-solvent interactions are demonstrated from the increasing excess enthalpy of mixing values in the positive direction with the increase of salt concentration.

Key words: salt effect, enthalpy of mixing, displacement calorimeter, methanol-benzene, Redlich-Kister equation

TAMILARASAN Rengasamy, ANAND PRABU Arun, KAP JIN Kim, DHARMENDIRA KUMAR Mahendradas. Effect of Dissolved Cadmium Chloride and Ammonium Chloride Salts on the Enthalpy of Mixing of the Methanol+Benzene System at 303.15 K[J]. , 2010, 18(6): 995-999.

TAMILARASAN Rengasamy, ANAND PRABU Arun, KAP JIN Kim, DHAR-MENDIRA KUMAR Mahendradas. Effect of Dissolved Cadmium Chloride and Ammonium Chloride Salts on the Enthalpy of Mixing of the Methanol+Benzene System at 303.15 K[J]. , 2010, 18(6): 995-999.

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Effect of Dissolved Cadmium Chloride and Ammonium Chloride Salts on the Enthalpy of Mixing of the Methanol+Benzene System at 303.15 K

Effect of Dissolved Cadmium Chloride and Ammonium Chloride Salts on the Enthalpy of Mixing of the Methanol+Benzene System at 303.15 K

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