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四苯硼钠在直链一元醇中的溶解度及其从水到醇中的迁移自由能

Solubility of Sodium Tetraphenylborate in Straight Chains Monohydric Alcohols and Its Free Energies of Transfer from Water to Alcohols

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【作者】 邹立壮李大成王晓玲

【Author】 Zou, Ii-Zhuang~* Li, Da-Cheng Wang, Xiao-Ling (Deparment. of Chemisiry, Shandong Liaocheng Teachers College, Liaocheng, 252000)

【机构】 山东聊城师范学院化学系山东聊城师范学院化学系 聊城 252000聊城 252000

【摘要】 在288.15—328.15K,用光度法测定了四苯硼钠在7种直链一元醇中的溶解度。计算并讨论了298.15K时,四苯硼钠从水到醇中的标准迁移自由能及介质效应的大小。通过计算机曲线拟合,给出了四苯硼钠的溶解度跟直链一元醇碳原子数及温度的关系: lgc=0.9090+(-0.4545+0.15201gT)(10+n).同时给出了298.15K时,四苯硼钠的标准迁移自由能跟直链一元醇的介电常数和碳原子数的关系: ⊿G<sup>e=55.75exp(-0.0881D);⊿G<sup>e=-4.92×10-3+3.08n。

【Abstract】 Solubilities (c) of sodium tetraphenylborate in methanol, ethanol, 1-propanol, 1-bushel, 1-pentanol, 1-hxeanol, 1-octanol at 288.15, 298.15, 308.15, 318.15, 328.15 K have been determinad by the spectrophotometry. These data can be expressed by lgc0.9090+(-0.4545+0.1520lgT)(10+n), where n are the atomic number of carbon for the straight chains monohydrio alcohols. The standard free energies of transfer (ΔGt of sodium tetraphenylborate from water to the straight chains monohydric alcohols at 298.15 K have been calculated. The results can be expressed as ΔGe=55.75 exp (-0.0881 D), where D are the dielectric constants of the alcohols. When ΔGet plotted against n,a good straight line is obtained. The results can be expressed as ΔGet= -4.92×10-3+3.08n.

  • 【文献出处】 化学学报 ,Acta Chimica Sinica , 编辑部邮箱 ,1992年03期
  • 【被引频次】10
  • 【下载频次】28
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