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Consider the following unbalanced redox ...

Consider the following unbalanced redox reaction:
`H_(2)O+AX+BYrarrHA+OY+X_(2)B`
The oxidation number of `X` is `-2` and niether `X` nor water is involved in the redox process.
If the above reaction is balanced with smallest whole number coefficients, the sum of the stoichiometric coefficients of all the compound is

A

`9`

B

`8`

C

`7`

D

`6`

Text Solution

Verified by Experts

The correct Answer is:
B
`A^(2+)+cancel(H^(o+))+cancel(3e^-)rarrHA]xx2`
`ul(BY+H_(2)OrarrB^(4+)+OY+cancel(2H^(o+))+cancel(6e^(-)))`
`2A^(2+)+BY+H_(2)Orarr2HA+B^(4+)+OY`
or
`(2AX)/(2)underset(+)+(BY)/(1)underset(+)+(H_(2)O)/(1)underset(+)+(2HA)/(2)underset++(BX_(2))/(1)underset++(OY)/(1)=8`
The sum of all the coefficients is `8`.
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