i put 1 for the spaces before both of the Fes and got them both wrong but i got the others right. thank you
Balance the equation:
Note: If a chemical species coefficient is "1" then "1" needs to be entered in the field before that species.
1 MnO4– + 8H+ +__ Fe2+ -->1Mn2+ + 4H2O + __Fe3+
put 6 before Fe2+ and Fe3+
wait why is it 6?
Mn changes from +7 on the left to +2 on the right.
Fe changes from +2 on the left to +3 on the right.
Therefore, place a 5 for both Fe on the left and right. The others are ok.
because its a redox reaction. the number of electrons in the Fe2+ to Fe3+ half-equation must equal the number of electrons in the MnO4 to Mn2+ half-equation, which is 6. Thus you need to have 6 Fe2+ and 6 Fe3+ also.
Balance each half-equation first, and then combine the 2. :)
don't put 6. it's wrong in webwork
Put 5 before Fe2+ and before Fe3+
To balance the given equation:
1. Determine the number of atoms of each element on both sides of the equation.
On the left side:
- Mn: 1
- O: 4
- H: 8
- Fe: 2
On the right side:
- Mn: 1
- O: 4
- H: 8
- Fe: 3
2. Start balancing with the most complex molecule or ion. In this case, it's the permanganate ion (MnO4-).
To balance the manganese (Mn) atoms:
- Add a coefficient of 1 before MnO4- on both sides:
1 MnO4– + 8H+ + __ Fe2+ --> 1 Mn2+ + 4H2O + __ Fe3+
To balance the oxygen (O) atoms:
- The left side has 4 O atoms from the permanganate ion, while the right side has 4 O atoms from the water molecules (4 x 2 = 8). Since there's already enough O atoms on the right side, we don't need to add any coefficients.
To balance the hydrogen (H) atoms:
- The left side has 8 H atoms from the hydronium ions (8 x 1 = 8), and the right side has 4 H atoms from the water molecules. Therefore, we need to add a coefficient of 4 before the water molecules on the right side:
1 MnO4– + 8H+ + __ Fe2+ --> 1 Mn2+ + 4H2O + __ Fe3+
To balance the iron (Fe) atoms:
- The left side has 2 Fe atoms, while the right side has 1 Fe atom. We need to add a coefficient of 2 before Fe3+ on the right side:
1 MnO4– + 8H+ + __ Fe2+ --> 1 Mn2+ + 4H2O + 2 Fe3+
Now, the equation is balanced with the following coefficients:
1 MnO4– + 8H+ + 5 Fe2+ --> 1 Mn2+ + 4H2O + 2 Fe3+