Common Exam Questions
Question 1: Balance the following equation: Fe + Cl₂ → FeCl₃
Model answer: Count atoms — Left: 1 Fe, 2 Cl. Right: 1 Fe, 3 Cl. Chlorine is not balanced. Multiply FeCl₃ by 2 and Fe by 2, then adjust Cl₂: 2Fe + 3Cl₂ → 2FeCl₃ Check — Left: 2 Fe, 6 Cl. Right: 2 Fe, 6 Cl. ✓