溶液的pH越小,金属离子与EDTA配位反应能力越低。
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EDTA与Ca2+形成配合物时,其配位比为1∶2。
A. 对
B. 错
在食品或药物分析中测定钙的含量,一般可用配位滴定法测定()
A. 对
B. 错
在水质分析中,测定水的硬度通常用配位滴定法测定()
A. 对
B. 错
The young man was seriously hurt in the accident and the doctors' efforts to revive him were ____.
A. futile
B. fulfill