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    Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/3473

    Title: 雙參數個別離子活性係數模式應用於雙電解質水溶液蒸汽壓之估算
    Authors: 許秀菱;Hsiu-Ling Hsu
    Contributors: 化學工程與材料工程研究所
    Keywords: 蒸汽壓;電解質水溶液;雙參數;模式
    Date: 2003-07-11
    Issue Date: 2009-09-21 12:16:49 (UTC+8)
    Publisher: 國立中央大學圖書館
    Abstract: 本研究量測雙成分強電解質NaCl + KBr及NaBr + KCl 水溶液的蒸汽壓數據,量測溫度範圍從303.15K到333.15K。電解質溶液之濃度為1m、2m、3m、4m。從實驗數據得到此二鹽類水溶液之蒸汽壓隨著溫度升高而增加,以及隨著鹽類濃度的增加而有線性降低的情形。對於此二種鹽類混合物既然有相同的鹽類離子,在相同溫度與相同濃度的條件下,應該可觀察到其有相同的蒸汽壓,實驗中也得到一致性的觀察。 由於強電解質水溶液之強解離效應,粒子在水溶液中之作用力應有相同效應,此說明強多電解質在水溶液中為完全解離,因此對水的蒸汽壓影響完全相同。 本研究利用Lin and Lee (2003)雙離子參數之個別活性係數模式推估雙成分電解質水溶液蒸汽壓值比較,結果NaCl + KBr水溶液之平均絕對偏差 (AAD) 與平均絕對相對偏差 (AARD) 分別為0.05kPa 與 0.41%,對於NaBr + KCl為0.05kPa 與0.40% 。 In this study, the vapor pressures of the aqueous solutions of NaCl + KBr and NaBr + KCl were measured in the temperature range from 303.15 K to 333.15 K and concentrations of 1m, 2m, 3m, and 4m. The experimental data showed that the vapor pressures of these aqueous solutions increase with increasing temperature and linearly decrease with increasing concentration. It is reasonable to consider that these two aqueous solutions should exhibit identical vapor pressure at the same temperature and concentration since they content the same ions in solutions. This was observed consistently with the experimental data. In this study, the two-parameter ionic activity coefficient model of Lin and Lee (2003) was employed to predict the vapor pressures of these two aqueous solutions. The average absolute deviations (AAD) and the average absolute relative deviations (AARD) are 0.05 kPa and 0.41% for NaCl + KBr aqueous solution and 0.05 kPa and 0.40% for NaBr + KCl aqueous solution, respectively.
    Appears in Collections:[化學工程與材料工程研究所] 博碩士論文

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