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在酸性范围内,在不同F/SiO_2值及不同硅酸浓度的溶液中,用氟电极法测得氟和硅酸的结合量,并求得反应式: Si(OH)_4+HF(?)[Si(OH)_3F]+H_2O 其平衡常数β_1=1.7×10~2。从而验证了在酸性含氟硅酸溶液中主要存在着这种初始反应。同时求算了六氟硅酸的总形成常数β_6=2×10~(12)。
In the acidic range, the combination of fluorine and silicic acid was measured by the fluorine electrode method in different F / SiO_2 values and different concentrations of silicic acid solution, and the reaction equation: Si (OH) 4 + HF (?) [Si (OH) _3F] + H_2O its equilibrium constant β_1 = 1.7 × 10 ~ 2. This verifies that this initial reaction predominates in the acidic fluorosilicic acid solution. At the same time, the total formation constant of hexafluorosilicic acid is calculated as β_6 = 2 × 10 ~ (12).