填空题：今有A克含Na2CO3的试样,以甲基橙为指示剂,用浓度为C的HCl溶液滴定耗去HCl Bml 已知Na2CO3摩尔质
填空题：今有A克含Na2CO3的试样,以甲基橙为指示剂,用浓度为C的HCl溶液滴定耗去HCl Bml 已知Na2CO3摩尔质
量为106,则试样中Na2CO3%=
量为106,则试样中Na2CO3%=
数学人气：935 ℃时间：2019-12-12 21:37:56
优质解答
假设试样中Na2CO3%= x,由方程式Na2CO3+2HCl=2NaCl+H2CO3可知,Na2CO3和HCl的摩尔比为1比2,即A*x/106比c*B/1000等于1比2,计算得到,x=53CB/1000A
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