1.

The amount of current in Faraday is required for the reduction of 1 mol of Cr_2 O_7^(2-)ions to Cr^(3+) is ,

Answer»

1F
2Ff
6F
4Ff

Solution :`Cr_(2)O_(7)^(2-)14H^(+)+6e^(-)rightarrow2Cr^(3+)+7H_(2)O`


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