(1)ZnS沉淀转化为CuS沉淀的定性解释 当向ZnS沉淀上滴加CuSO4溶液时， ZnS溶解产生的S2-与 CuSO4溶液中的Cu2+足以满足Q >Ksp (CuS)的条件， S2-与 Cu2+结合产生CuS沉淀并建立沉淀溶解平衡。 Only fresh gali_gool / gali golan / gali_golan / gali_gool leaks on daily basis updates 常利用沉淀的生成来除去某种离子,而根据沉淀溶解平衡观点, 某种离子不可能完全除去,实际中有一个界限, 低于这个界限, 就认为已完全除去。
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在难溶强电解质的饱和溶液中，加入含有共同离子的易溶 强电解质，使难溶电解质的溶解度减小的现象，叫同离子效应。
沉淀溶解平衡是指已溶解的溶质与未溶解的溶质之间形成沉淀与溶解的平衡状态。 电离平衡则是指已经溶解在溶液中的弱电解质分子与离子之间的转化达到平衡状态。
它不仅阐述了沉淀溶解平衡和弱电解质电离的理论基础，还结合实际例子来说明这些平衡关系在实验中的应用，让我更加清晰地理解了化学的精髓。 (1) 利用酸、碱或某些盐类（如NH4+盐）与难溶电解质组分离子结合成弱电解质（如弱酸，弱碱或H2O）可以使该难溶电解质的沉淀溶解。 难溶电解质沉淀溶解平衡表示已溶溶质的离子与未溶溶质之间的平衡, 是可逆过程,表达式需要注明状态,如 Al(OH)3(s) Al3+(aq)+3OH-(aq)。电离平衡是溶解的弱电解质分子与离子之间的转化达到的平衡状态, 难溶强电解质的电离, 没有电离平衡, 如BaSO4===Ba2++SO2-4 ; 难溶弱. 沉淀转化的实质是沉淀溶解平衡的移动。 通常，一种沉淀可以转化为更难溶的沉淀，两种难容物的溶解能力差别越大，这种转化的趋势就越明显。
AgCl在溶液中存在下述两个过程：一方面，在水分子作用下，少量Ag＋和Cl－脱离AgCl的表面进入水中，即溶解过程；另一方面，溶液中的Ag＋和Cl－受AgCl表面阴、阳离子的吸引，回到AgCl的表面析出，即沉淀过程。 在一定温度下，当沉淀和溶解的速率相等时，达到平衡状态，得到AgCl的饱和溶液。 一定温度下，当沉淀和溶解的速率相等时，即建立了动态平衡，叫做沉淀溶解平衡。 以AgCl沉淀溶解平衡为例：AgCl (s)Ag＋ (aq)＋Cl－ (aq)。 特别提醒 ①要标明各微粒的状态；②要与AgCl电离方程式区分开，强电解质完全电离：AgCl===Ag＋＋Cl－。 化学上通常认为，当溶液中剩余离子的浓度小于1×10－5_mol·L－1时，已沉淀完全。 We have the best bath!! And gali porn videos on the internet, just like this one! Explore gali_golan's exclusive onlyfans content, including leaked pics and nudes
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