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已知CaCO3试样中杂质不干扰测定。称取该试样0.2500g,加入25.00ml0.2600mol/L盐酸溶解,煮沸除去CO2,用0.1225mol/LNaOH溶液返滴过量的酸,消耗13.00ml。试计算试样中CaCO3的质量分数。(已知MCaCO3=100.09。)
已知CaCO3试样中杂质不干扰测定。称取该试样0.2500g,加入25.00ml0.2600mol/L盐酸溶解,煮沸除去CO2,用0.1225mol/LNaOH溶液返滴过量的酸,消耗13.00ml。试计算试样中CaCO3的质量分数。(已知MCaCO3=100.09。)
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