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金属氢氧化物溶解度的规律性可用离子极化理论来探讨并予以解释。本文指出可应用本作者以前所建议的金属离子(水合)场强度φ+W=Z′/R_(+W)~2作为金属氢氧化物溶解度的统一判断依据,并求得一简单公式用以计算金属氢氧化物的pkm: pKm=φ~2+W+14φ+w+4.2 φ+W=Z′/R_(+W)~2=Z′/(r_++r_W)~2 式中Z′金属离子的的有效核电荷,r_+=金属离子半径,r_W=水分子半径。此公式适用于各种价态及外层电子结构的金属离子的氢氧化物。本文比较了各种金属氢氧化物的pkm计算值和实验值,57种计算值与实验值的平均误差为-0.44。
The regularity of solubility of metal hydroxide can be discussed and explained by ion polarization theory. This paper points out that the field intensity of metal ion (hydration) φ + W = Z ’/ R _ (+ W) ~ 2 suggested by the author can be used as a uniform judgment basis for the solubility of metal hydroxide and a simple formula Calculate the pkm of metal hydroxide: pKm = φ ~ 2 + W + 14φ + w + 4.2 φ + W = Z ’/ R _ (+ W) ~ 2 = Z’ / (r_ ++ r_W) ’The effective nuclear charge of metal ions, r_ + = radius of metal ions, r_W = radius of water molecules. This formula applies to a variety of valence and outer electronic structure of metal ions hydroxide. In this paper, the calculated pkm values and experimental values of various metal hydroxides are compared. The average error between the 57 calculated and experimental values is -0.44.