配制pH=9.2的缓冲溶液时,应选用的缓冲对是A,HAc----NaAc(Ka=1.8×10的-5次方)B,NaH2PO4-----Na2HPO4(Ka2=6.3×10的-8次方)C,NH3------NH4Cl(Kb=1.8×10的-5次方)D,NaHCO3--------Na2CO3(Ka2=5.6×10的-11次方)这类型选缓
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![配制pH=9.2的缓冲溶液时,应选用的缓冲对是A,HAc----NaAc(Ka=1.8×10的-5次方)B,NaH2PO4-----Na2HPO4(Ka2=6.3×10的-8次方)C,NH3------NH4Cl(Kb=1.8×10的-5次方)D,NaHCO3--------Na2CO3(Ka2=5.6×10的-11次方)这类型选缓](/uploads/image/z/6744167-71-7.jpg?t=%E9%85%8D%E5%88%B6pH%3D9.2%E7%9A%84%E7%BC%93%E5%86%B2%E6%BA%B6%E6%B6%B2%E6%97%B6%2C%E5%BA%94%E9%80%89%E7%94%A8%E7%9A%84%E7%BC%93%E5%86%B2%E5%AF%B9%E6%98%AFA%2CHAc----NaAc%28Ka%3D1.8%C3%9710%E7%9A%84-5%E6%AC%A1%E6%96%B9%EF%BC%89B%2CNaH2PO4-----Na2HPO4%28Ka2%3D6.3%C3%9710%E7%9A%84-8%E6%AC%A1%E6%96%B9%EF%BC%89C%2CNH3------NH4Cl%EF%BC%88Kb%3D1.8%C3%9710%E7%9A%84-5%E6%AC%A1%E6%96%B9%EF%BC%89D%2CNaHCO3--------Na2CO3%EF%BC%88Ka2%3D5.6%C3%9710%E7%9A%84-11%E6%AC%A1%E6%96%B9%EF%BC%89%E8%BF%99%E7%B1%BB%E5%9E%8B%E9%80%89%E7%BC%93)
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