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【单选题】
用 EDTA滴定Ca 2+ 离子反应的 lg K CaY =10.69。当时pH=9.0时,Y 4- 的 lg α Y(H) =1.29,则该反应的lg K’ CaY 为A.
1.29
B.
-9.40
C.
10.69
D.
9.40
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A.
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B.
that
C.
which
D.
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A.
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B.
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C.
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D.
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A.
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B.
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C.
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D.
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