The value 'y' for the following redox reaction occurring in basic medium is-------
`a Cr ( OH ) _(4 (aq)) ^(-) + bCl O_((aq)) ^(-)`
`+ c O H _((aq)) ^(-) to x Cr O _(4 (aq)) ^(2-) + y Cl _((aq)) ^(-) + z H _(2) O_((l))`

Answer

3

Explanation

The balanced equation is
`2 Cr ( OH ) _(4 (aq)) ^(-) + 4 ClO _((aq)) ^(-) + 2 OH _((aq)) ^(-)`
`to 2 Cr O _(4 (aq)) ^(2-) + 3 Cl _((aq)) ^(-) + 5 H _(2) O _((l))`
`2 Cr ( OH ) _(4 (aq)) ^(-) + 4 ClO _((aq)) ^(-) + 2 OH _((aq)) ^(-)`
to alue of .y. is 3.