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氯化氧锆的水解极谱波
ON THE POLAROGRAPfflC HYDROLYTIC CURRENT OF ZIRCONYL CHLORIDE
【摘要】 1.氯化氧锆在0.1M氯化钾、溴化四甲铵或硝酸钾底液中的水解极谱波与锆的浓度成正比,可用来测定氯化氧锆的含量。 2.氯化氧锆的水解在浓度10-2-5×10-4M(0—40°)时按下式进行: ZrOCl2+H2O=ZrO(OH)C1+HCl 3.水解极谱波的id/Cm2/3t1/6比同浓度盐酸氢离子的为小,认为是锆盐存在下,溶液的粘度增加,氢离子的扩散系数较小的缘故。氯化氧锆水溶液的pH值此按氯化氧锆浓度计算的值为大,但与同浓度的盐酸溶液的pH值相接近,因此认为是活度系数的影响。
【Abstract】 The polarographic wave due to the hydrolysis of zirconyl chloride in 0.1 M KC1, N(CH3)4Br or KKO3 solution has been found to be proportional to the concentration of zirconyl chloride and may be used as the basis for its quantitative determination.It has been demonstrated by pH measurement and conductometric titration that the hydrolysis proceeds quantitatively as follows:ZrOCl3+H2O = ZrO(OH)Cl+HClThe diffusion current constant cf the hydrolytic wave is smaller than the ordinary hydrogen wave because the presence of ZrOCl2 increases the viscosity of the solution and hence decreases the diffusion coefficient of the hydronium ion.
- 【文献出处】 北京大学学报(自然科学) , 编辑部邮箱 ,1958年02期
- 【被引频次】1
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