Question

Balance The Following Redox Reaction By Inserting The Appropriate Coefficients Al+MnO2---->Al2O3+Mn

Answer 1

4Al + 3MnO2 --> 2Al2O3 + 3Mn

Step-by-step explanation:

x indicates a coefficient that has not been calculated for yet.

Oxygen must be an even number (multiple of 2) so we multiply left hand by 3 and right hand by 2:

xAl + 3MnO2 --> 2Al2O3 + xMn

There must be 4 Al on the left and 3 Mn on the right:

4Al + 3MnO2 --> 2Al2O3 + 3Mn