1.

Choose correct statements regarding the following reaction Cr_2O_(7(aq))^(-2)+3SO_(3(aq))^(-2) + 8H^(+) rarr 2Cr_((aq))^(+3) +3SO_(4(aq))^(-2) + 4H_2O

Answer»

`Cr_(2)O_(7)^(-2)` is oxidising agent
`SO_(3)^(-2)` is REDUCING agent
The oxidation number of per S-atom in `3SO_(3)^(-2)` is increased by two
The oxidation number of per Cr-atom is decreased by three

Solution :`Cr_(2)^(+6)O_(7)^(-2) + S^(+4)O_(3)^(-2) RARR Cr^(+3) + S^(+6) O_(4)^(-2)`


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