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a.两种溶液中c(CH3COO﹣)都等于0.1mol/L
b.两种溶液中c(CH3COO﹣)都小于0.1mol/L
C.CH3COOH溶液中c(CH3COO﹣)小于CH3COONa溶液中c(CH3COO﹣)
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