0.02mol/L的HCN溶液与0.02mol/LNaCN溶液等体积混合,已知混合溶液中c(CN-)<c(Na+),则下列关系中,正确的是 A、c(Na+)>c(CN-)>(OH-)>c(H+) B、c(HCN)+c(CN-)=0.04mol/L C、c(Na+)+c(H+)=c(CN-)+c(OH-) D、c(CN-)>c(HCN) ——
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![0.02mol/L的HCN溶液与0.02mol/LNaCN溶液等体积混合,已知混合溶液中c(CN-)<c(Na+),则下列关系中,正确的是 A、c(Na+)>c(CN-)>(OH-)>c(H+) B、c(HCN)+c(CN-)=0.04mol/L C、c(Na+)+c(H+)=c(CN-)+c(OH-) D、c(CN-)>c(HCN) ——](/uploads/image/z/3405303-63-3.jpg?t=0.02mol%2FL%E7%9A%84HCN%E6%BA%B6%E6%B6%B2%E4%B8%8E0.02mol%2FLNaCN%E6%BA%B6%E6%B6%B2%E7%AD%89%E4%BD%93%E7%A7%AF%E6%B7%B7%E5%90%88%2C%E5%B7%B2%E7%9F%A5%E6%B7%B7%E5%90%88%E6%BA%B6%E6%B6%B2%E4%B8%ADc%28CN-%29%EF%BC%9Cc%28Na%2B%29%2C%E5%88%99%E4%B8%8B%E5%88%97%E5%85%B3%E7%B3%BB%E4%B8%AD%2C%E6%AD%A3%E7%A1%AE%E7%9A%84%E6%98%AF+A%E3%80%81c%28Na%2B%29%EF%BC%9Ec%28CN-%29%EF%BC%9E%28OH-%29%EF%BC%9Ec%28H%2B%29+B%E3%80%81c%28HCN%29%2Bc%28CN-%29%3D0.04mol%2FL+C%E3%80%81c%28Na%2B%29%2Bc%28H%2B%29%3Dc%28CN-%29%2Bc%28OH-%29+D%E3%80%81c%28CN-%29%EF%BC%9Ec%28HCN%29+%E2%80%94%E2%80%94)
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