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【单选题】
由等体积的 HAc-NaAc 组成的缓冲溶液,缓冲能力最强的是 ( )A.
0.10 mol·L -1 HAc + 0.10 mol·L -1 NaAc
B.
0. 3 0 mol·L -1 HAc + 0.10 mol·L -1 NaAc
C.
0. 3 0 mol·L -1 HAc + 0.30 mol·L -1 NaAc
D.
0.10 mol·L -1 HAc + 0. 3 0 mol·L -1 NaAc
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