Answer:
1 Â
Explanation:
C + SnO₂ ⟶ Sn + CO₂
1. Pick the most complicated-looking formula (SnOâ‚‚?).
Put a 1 in front of it.
C + 1SnO₂ ⟶ Sn + CO₂
2. Balance Sn.
Done.
Put a 1 in front of CSâ‚‚.
C + 1SnO₂ ⟶ 1Sn + CO₂
3. Balance O.
We have fixed 2O on the left. We need 2O on the right.
Put a 1 in front of COâ‚‚.
C + 1SnO₂ ⟶ 1Sn + 1CO₂
4. Balance C
We have fixed 1C on the right. We need 1C on the left.
Put a 1 in front of C.
1C + 1SnO₂ ⟶ 1Sn + 1CO₂
All species have a coefficient. The equation should now be balanced.
5. Check that all atoms are balanced
The balanced equation should have the same number of atoms on each side of the reaction arrow.
[tex]\begin{array}{ccc}\textbf{Atom} & \textbf{On the left} & \textbf{On the right}\\\text{C} & 1 & 1\\\text{Sn} & 1 & 1\\\text{O} & 2 & 2\\\end{array}[/tex]
The balanced equation is
1C + SnO₂ ⟶ Sn +2CO₂
The coefficient of C is 1.
