已知HAc的标准平衡常数
，则Ac－的
等于（）。
A: 5.6×10-10
B: 5.6×10-5
C: 1.8×10-9
D: 1.8×10-10
，则Ac－的等于（）。A: 5.6×10-10
B: 5.6×10-5
C: 1.8×10-9
D: 1.8×10-10
举一反三
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