已知M(ZnO)=81.38g/mol,用它来标定0.02mol的EDTA溶液,宜称取ZnO为()


已知M(ZnO)=81.38g/mol,用它来标定0.02mol的EDTA溶液,宜称取ZnO为()

A.4g

B.1g

C.0.4g

D.0.04g

正确答案:C


Tag:溶液 时间:2022-12-23 16:09:32