In the ionic equation,
`BiO_(3)^(-)+6H^(+)+xe^(-) to Bi^(3)+3H_(2)O`, the value of x is

Options

A. 6
B. 2
C. 4
D. 3

Answer

B

Explanation

`(1) Na_(2) overset(2.5)(S_(4)) O_(6), H_(2) overset(+6)(S_(2)) O_(7), Na_(2) overset(+2)(S_(2))O_(3), overset(0)(S_(8))`
`H_(2)overset(+6)S_(4), overset(+4)(S)O_(2), H_(2) overset(-2)(S), H_(2) overset(+6)(S_(2)) O_(8)`
(3) `overset(+6)(SO_(2)^(2)), overset(+6)(SO_(4)^(2-)), overset(+4)(SO_(3)^(2-)) , Hoverset(+6)(SO_(4)^(-))`
`H_(2) overset(+6)(S) O_(5), H_(2) overset(+4)(SO_(3)), overset(+2)(S CI_(2)), H_(2) overset(-2)(S)`