一道关于沉淀-溶解平衡的化学题溶液中 [Br− ] = 0.020 mol L−1 , [CrO 2− ] = 0.0030 mol L−1,在溶液中逐次加入固体硝酸银,问 Ag2CrO4(s)刚开始沉淀时 的[Br− ]英文原题是这样的8 In a
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![一道关于沉淀-溶解平衡的化学题溶液中 [Br− ] = 0.020 mol L−1 , [CrO 2− ] = 0.0030 mol L−1,在溶液中逐次加入固体硝酸银,问 Ag2CrO4(s)刚开始沉淀时 的[Br− ]英文原题是这样的8 In a](/uploads/image/z/6502282-34-2.jpg?t=%E4%B8%80%E9%81%93%E5%85%B3%E4%BA%8E%E6%B2%89%E6%B7%80%EF%BC%8D%E6%BA%B6%E8%A7%A3%E5%B9%B3%E8%A1%A1%E7%9A%84%E5%8C%96%E5%AD%A6%E9%A2%98%E6%BA%B6%E6%B6%B2%E4%B8%AD+%5BBr%26%238722%3B+%5D+%3D+0.020+mol+L%26%238722%3B1+%2C+%5BCrO+2%26%238722%3B+%5D+%3D+0.0030+mol+L%26%238722%3B1%2C%E5%9C%A8%E6%BA%B6%E6%B6%B2%E4%B8%AD%E9%80%90%E6%AC%A1%E5%8A%A0%E5%85%A5%E5%9B%BA%E4%BD%93%E7%A1%9D%E9%85%B8%E9%93%B6%2C%E9%97%AE+Ag2CrO4%28s%29%E5%88%9A%E5%BC%80%E5%A7%8B%E6%B2%89%E6%B7%80%E6%97%B6+%E7%9A%84%5BBr%26%238722%3B+%5D%E8%8B%B1%E6%96%87%E5%8E%9F%E9%A2%98%E6%98%AF%E8%BF%99%E6%A0%B7%E7%9A%848+In+a)
一道关于沉淀-溶解平衡的化学题溶液中 [Br− ] = 0.020 mol L−1 , [CrO 2− ] = 0.0030 mol L−1,在溶液中逐次加入固体硝酸银,问 Ag2CrO4(s)刚开始沉淀时 的[Br− ]英文原题是这样的8 In a
一道关于沉淀-溶解平衡的化学题
溶液中 [Br− ] = 0.020 mol L−1 , [CrO 2− ] = 0.0030 mol L−1,在溶液中逐次加入固体硝酸银,问 Ag2CrO4(s)刚开始沉淀时 的[Br− ]
英文原题是这样的
8 In a particular solution, [Br− ] = 0.020 mol L−1 and
[CrO 2− ] = 0.0030 mol L−1. Finely-divided solid silver nitrate, AgNO3, is slowly added to the solution. What
is [Br− ] when Ag2CrO4(s) just begins to precipitate?
*A 2.1×10−8 mol L−1
B 6.0×10−8 mol L−1
C 2.7×10−7 mol L−1
D 5.2×10−13 mol L−1
E 6.4×10−4 mol L−1
一道关于沉淀-溶解平衡的化学题溶液中 [Br− ] = 0.020 mol L−1 , [CrO 2− ] = 0.0030 mol L−1,在溶液中逐次加入固体硝酸银,问 Ag2CrO4(s)刚开始沉淀时 的[Br− ]英文原题是这样的8 In a
查表得Ksp(AgBr)=a,Ksp(Ag2CrO4)=b.
[Ag+]^2*[CrO42-(原浓度)]=b
[Ag+]*[Br-(新浓度)]=a
自己查Ksp表,带入计算