1.

For the reaction `M^(x+)+MnO_(4)^(ө)rarrMO_(3)^(ө)+Mn^(2+)+(1//2)O_(2)` if `1 "mol of" MnO_(4)^(ө)` oxidises `1.67 "mol of" M^(x+) "to" MO_(3)^(ө)`, then the value of `x` in the reaction isA. 2B. 3C. 4D. 5

Answer» Correct Answer - A
`M^(x+)+MnO_(4)^(ɵ)toMO_(3)^(ɵ)+Mn^(2+)`
`MnO_(4)^(ɵ)+8H^(o+)+5e^(-)toMn^(2+)+4H_(2)O`
`M^(x+)+3H_(2)OtoMO_(3)^(ɵ)+6H^(o+)+(5-x)e^(-)`
`m" Eq of "MnO_(4)^(2-)-=m" Eq of "M^(x+)`
`1xx5-=[1.67xx(5-x)]implies5-x=3impliesx=2`


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