Question

9. What coefficient of H+ balances the atoms in this half-reaction?
H+ + MnO₂ → Mn²+ + H₂O

Answer 1

Answer:4

Explanation:To balance the equation you need to make the number of each element equivalent in both sides.

To start add a 2 in front of the MnO2 which balances the Mn.

Then balance the oxygen by adding a 4 in front of H20.

The H then needs a 8 as it’s coefficient.