Question

Consider the following unbalanced half-reaction: `CrO_2 + ?OH -> CrO_4^(-2) + ?H_2O + 3e^-`. If the equation were balanced, what would be the coefficient of the water molecule?

Answer 1

`CrO_2 + 4OH ^"-" -> CrO_4^(-2) + 2H_2O + 2e^-`

Explanation:

The equation should be as follows
`CrO_2 + 4OH ^"-" -> CrO_4^(-2) + 2H_2O + 2e^-`