When acidified `K_(2)Cr_(2)O_(7)` solution is added to `Sn^(2+)` salts then `Sn^(2+)` changes to
Channel: Doubtnut
Date: 2020-02-16

When acidified `K_(2)Cr_(2)O_(7)` solution is added to `Sn^(2+)` salts then `Sn^(2+)` changes to