The electrode reactions that takes place at the anode of `CH_(4)-O_(2)` fuel cell is :

Options

A. `2O_(2)+8H^(+)+8e^(-)to4H_(2)O`
B. `CH_(4)+2H_(2)OtoCO_(2)+8H^(+)+8e^(-)`
C. `CH_(4)+2O_(2)toCO_(2)+2H_(2)O`
D. `2H^(+)+2e^(-)toH_(2)`.

Answer

B

Explanation

Anode reaction: `CH_(4)+2H_(2)OtoCO_(2)+8H^(+)+8e^(-)`
Cathode reaction: `underline([O_(2)+4H^(+)+4eto2H_(2)O]xx2" ")`
`CH_(4)(g)+2O_(2)(g)toCO_(2)(g)+2H_(2)O(l)`