Write the balanced chemical reaction for the formation of Fe2 (SO4) 3 from Fe2O3 and SO3 and determine how many moles of Fe2 (SO4) 3 are formed when 12.7 Mol of SO3 are reacted.

4.23 mol

Step-by-step explanation:

Step 1. Balanced equation

Fe₂O₃ + 3SO₃ ⟶ Fe₂ (SO₄) ₃

Step 2. Calculation:

You want to convert moles of SO₃ to moles of Fe₂ (SO₄) ₃.

The molar ratio is 1 mol Fe₂ (SO₄) ₃:3 mol SO₃

Moles of Fe₂ (SO₄) ₃ = 12.7 mol SO₃ * (1 mol Fe₂ (SO₄) ₃/3 mol SO₃)

Moles of Fe₂ (SO₄) ₃ = 4.23 mol Fe₂ (SO₄) ₃

The reaction will form 4.23 mol of Fe₂ (SO₄) ₃.