Which of the following equations is a balanced one?

Options

A. `5BiO_(3)^(-)+22H^(+)+Mn^(2+) rarr 5Bi^(3+)+7H_(2)O+MnO_(4)^(-)`
B. `5BiO_(3)^(-)+14H^(+)+2Mn^(2+) rarr 5Bi^(3+)+7H_(2)O+2MnO_(4)^(-)`
C. `2BiO_(3)^(-)+4H^(+)+Mn^(2+) rarr 2Bi^(3+)+2H_(2)O+MnO_(4)^(-)`
D. `6BiO_(3)^(-)+12H^(+)+3Mn^(2+) rarr 6Bi^(3+)+6H_(2)O+3MnO_(4)^(-)`

Answer

B

Explanation

`5BiO_(3)^(-)+2Mn^(2+) rarr 5Bi^(3+)+2MnO_(4)^(-)`
`H` and `O` balance
`5BiO_(3)^(-)+2Mn^(2+)+14H^(+) rarr 5Bi_(1)^(3+)+2MnO_(4)^(-)+7H_(2)O`