25. How many moles of excess reactant remain after the complete reaction of 18 mol of...

Question

Question

25. How many moles of excess reactant remain after the complete reaction of 18 mol of sulfur (S₈) with 31.2 mole of oxygen gas (O₂).

S₈ + 8 O₂ → 8 SO₂

Answer 1

Answer #1

S8 + 8 O2 → 8 SO2

Here, 1 mole of sulfur reacts with 8 mole of oxygen to form 8 moles of SO2.

31.2 mole of oxygen can react with 3.9 mole of sulfur.

no of moles of excess reactant = 18 - 3.9 = 14.1 mole of sulfur

Answer 2

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