Question

identify the balanced chemical equation. select the correct answer below: 2 o₂ + 4 fe → 2 fe₂o₃ c₇h₁₆ + 10 o₂ → 7 co₂ + 8 h₂o febr₃ + h₂so₄ → fe₂(so₄)₃ + hbr 2 fe + 3 cl₂ → 2 fecl₃

Explanation:

Step1: Check iron atoms

On left - hand side: 2 Fe. On right - hand side: 2 Fe.

Step2: Check chlorine atoms

On left - hand side: 3×2 = 6 Cl. On right - hand side: 2×3 = 6 Cl.

Step3: Analyze other options

• Option A: 2 O₂ + 4 Fe → 2 Fe₂O₃ has 4 O on left and 6 O on right, unbalanced.
• Option B: C₇H₁₆ + 10 O₂ → 7 CO₂ + 8 H₂O has 20 O on left and 22 O on right, unbalanced.
• Option C: FeBr₃ + H₂SO₄ → Fe₂(SO₄)₃ + HBr has 1 Fe on left and 2 Fe on right, unbalanced.

Answer:

D. 2 Fe + 3 Cl₂ → 2 FeCl₃