在Al2(SO4)3,K2SO4和明矾的混合液中,如果c(SO4^2-)=0.2mol/L.当加入等体积的0.2mol/L KOH溶液中时,生 生成的沉淀恰好溶解,则原混合物中K^+的物质的量浓度为( )A 0.2mol/L B 0.25mol/L C 0.45mol/L D 0.225mol/L答
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![在Al2(SO4)3,K2SO4和明矾的混合液中,如果c(SO4^2-)=0.2mol/L.当加入等体积的0.2mol/L KOH溶液中时,生 生成的沉淀恰好溶解,则原混合物中K^+的物质的量浓度为( )A 0.2mol/L B 0.25mol/L C 0.45mol/L D 0.225mol/L答](/uploads/image/z/6550660-28-0.jpg?t=%E5%9C%A8Al2%EF%BC%88SO4%293%2CK2SO4%E5%92%8C%E6%98%8E%E7%9F%BE%E7%9A%84%E6%B7%B7%E5%90%88%E6%B6%B2%E4%B8%AD%2C%E5%A6%82%E6%9E%9Cc%28SO4%5E2-%29%3D0.2mol%2FL.%E5%BD%93%E5%8A%A0%E5%85%A5%E7%AD%89%E4%BD%93%E7%A7%AF%E7%9A%840.2mol%2FL+KOH%E6%BA%B6%E6%B6%B2%E4%B8%AD%E6%97%B6%2C%E7%94%9F+%E7%94%9F%E6%88%90%E7%9A%84%E6%B2%89%E6%B7%80%E6%81%B0%E5%A5%BD%E6%BA%B6%E8%A7%A3%2C%E5%88%99%E5%8E%9F%E6%B7%B7%E5%90%88%E7%89%A9%E4%B8%ADK%5E%2B%E7%9A%84%E7%89%A9%E8%B4%A8%E7%9A%84%E9%87%8F%E6%B5%93%E5%BA%A6%E4%B8%BA%EF%BC%88+%EF%BC%89A+0.2mol%2FL+B+0.25mol%2FL+C+0.45mol%2FL+D+0.225mol%2FL%E7%AD%94)
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