称取氯化锌试样0.3600g,溶于水后控制溶液的酸度PH=6.以二甲酚橙为指示剂,用0.1024mol/L的EDTA溶液25.00mL滴定至终点,则氯化锌的含量为()。M(ZnCl2)=136.29g/mol.
称取氯化锌试样0.3600g,溶于水后控制溶液的酸度PH=6.以二甲酚橙为指示剂,用0.1024mol/L的EDTA溶液25.00mL滴定至终点,则氯化锌的含量为()。M(ZnCl2)=136.29g/mol.
A.0.9692
B.0.969
C.0.4846
D.0.485
正确答案:A