1.

Cr_2O_(7)^(2-)+X overset(H^+) toCr^(3+) +H_2O +oxidised productof X ,Xin theabovereaction cannotbe

Answer»

`C_2 O_(4)^(2-)`
`FE^(2+)`
`SO_(4)^(2-)`
`S^(2-)`

SOLUTION :`SO_(4)^(2-)`is NOTA reducingagentand hencedoes notreduce`Cr_2 O_(7)^(2)`


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