Write the preparation of following : (i) `KMnO_4 from K_2MnO_4` (ii) `Na_2CrO_4from FeCr_2O_4`
Channel: Doubtnut
Date: 03/01/2020

Write the preparation of following : (i) `KMnO_4 from K_2MnO_4` (ii) `Na_2CrO_4from FeCr_2O_4` (iii) `Cr_2O_(7)^(2-)from Cr_2O_(4)^(2-)`