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由于络合物在溶液中存在着多级离解,所以要精确地计算络离子溶液中有关离子的浓度则相当麻烦、费时,故常采用近似解法。师范院校用的《无机化学》教材对一个例题进行了如下的处理: [例1] 计算在0.1 M[Cu(NH_3)_4]SO_4溶液中Cu~(2+)和NH_3的浓度。(K_稳=4.8×10~(12)) 解:设[Cu~(2+)]=xM
Due to the multi-level dissociation of the complex in solution, it is cumbersome and time-consuming to accurately calculate the concentration of the ions in the complex ion solution. Therefore, the approximate solution is often used. A sample of Inorganic Chemistry textbooks used by teachers’ colleges treats a sample as follows: [Example 1] Calculate the concentrations of Cu 2+ and NH 3 in 0.1 M Cu (NH 3) 4 SO 4 solution. (K_stability = 4.8 × 10 ~ (12)) Solution: Let [Cu ~ (2 +)] = xM