Question #244136
what is the afvantage of using pottassium dichromate over potassium permanganate in quantitative estimation of iron in an unknown sample??
1
Expert's answer
2021-09-29T05:01:17-0400

Potassium dichromate (K2Cr2O7) is preferred over sodium dichromate in volumetric analysis, because K2Cr2O7 is hygroscopic in nature and, therefore, accurate weighing is not possible in normal atmospheric conditions.


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