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缓冲容量的计算

缓冲容量的计算. 姓名 : 岳红军 学号 :02081083. ㈠ 由缓冲溶液 HA-A -1 的缓冲容量 :. 简化缓冲溶液 HA-A -1 的缓冲容量 :. 加碱或加酸的缓冲容量表达式 :. ㈡ 多元酸缓冲容量. 二元酸加强碱的缓冲容量 :. 例 1 酒石酸的 pka1=3.04,pk a2 =4.37; 计算在 pH=3 和 pH=4 之间的缓冲容量. 当 pH=4 时 :. 解 : 先计算 HA - 和 A - 的分布系数 : 当 pH=3 时 :. 代入上式 , 设 C H2A =1 时的缓冲容量 :. 解 :.

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缓冲容量的计算

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  1. 缓冲容量的计算 姓名:岳红军 学号:02081083

  2. ㈠由缓冲溶液HA-A-1的缓冲容量:

  3. 简化缓冲溶液HA-A-1的缓冲容量: 加碱或加酸的缓冲容量表达式:

  4. ㈡多元酸缓冲容量 二元酸加强碱的缓冲容量:

  5. 例1 酒石酸的pka1=3.04,pka2=4.37;计算在pH=3和pH=4之间的缓冲容量. 当pH=4时: 解:先计算HA-和A-的分布系数: 当pH=3时: 代入上式,设CH2A=1时的缓冲容量:

  6. 解: 例2:0.1mol/L-1NaH2PO4和酒石酸一氢钾的缓冲容量? 当pH=4.66时 当pH=3.70时 0.1mol/LNaH2PO4:pH=4.66 酒石酸氢钾(H2A):pH=3.70

  7. 当pH=3.66时 当pH=5.66时 当pH=2.70时 当pH=4.70时

  8. pH在3.66~4.66之间的缓冲容量: pH在2.70~3.70之间的缓冲容量: pH在4.66~5.66之间的缓冲容量: pH在3.70~4.70之间的缓冲容量:

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