Balance the following half reactions in basis medium:
(a) `CrO_(4)^(2-)(aq)rarrCr(OH)_(4)^(Ө)(aq)`
(b) `CIO^(Ө)(aq) rarr Cl^(Ө)(aq)`
(c ) `Bi^(3+)(aq) rarr BiO_(3)^(Ө)(aq)`

Answer

A

Explanation

Basic medium
a. `4H_(2)O+3e^(-)+CrO_(4)^(2-)rarr[Cr(OH)_(4)]^(ө)+4overset(ө)OH`
`x-8=-2, x-4= -1`
`x=6= ,x=3`
b. `2H_(2)O+2e^(-)+ClO^(ө)rarrCl^(ө)+H_(2)O+2overset(ө)OH`
`x-2= -1, x= -1`
c. `6overset(ө)OH+cancel(3H_(2)O)+Bi^(3+)rarrBiO_(3)^(ө)+2e^(-)+overset(3)cancel(6H_(2)O)`
`x=3, x-6= -1`
`x=5`.