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依据酸碱质子理论,PO43-

单选题
2021-09-01 23:42
A、是酸,其共轭碱是H3PO4。
B、是碱,其共轭酸是H3PO4。
C、是碱,其共轭酸是HPO42-。
D、是酸,其共轭碱是H2PO4-。
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正确答案
C

试题解析

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