How do you balance H_2O_2 + Ce^(4+) -> O_2 + Ce^(3+)H2O2+Ce4+O2+Ce3+?

1 Answer
Jul 31, 2017

Separate the reduction and oxidation reactions........

Explanation:

"Reduction half equation...."Reduction half equation....

Ce^(4+) + e^(-) rarr Ce^(3+)Ce4++eCe3+ (i)(i)

"Oxidation half equation...."Oxidation half equation....

H_2O_2 rarr O_2 + 2H^(+)+ 2e^(-)H2O2O2+2H++2e (ii)(ii)

And we add these equations together so that electrons do not appear in the final equation: 2xx(i) + (ii)2×(i)+(ii)............

2Ce^(4+) + H_2O_2 rarr 2Ce^(3+)+O_2 + 2H^(+)2Ce4++H2O22Ce3++O2+2H+

Charge and mass are balanced as is required..............

For another "redox equation"redox equation see [here.](https://socratic.org/questions/how-do-you-balance-this-equation-kmno4-na2s2o3-h2so4-k2so4-mnso4-na2so4-h2o)