In the contact process for making sulfuric acid, sulfur is first burned to SO 2 Environmental restrictions allow no more than 0 30 of this SO 2 to be vented to the atmosphere (a) If enough sulfur is burned in a plant to produce 1 80 10 6 kg of pure, anhydrous H 2 SO 4 per day, what is the maximum a...

To solve this problem well first calculate the maximum amount of SO2 that is allowed to be exhausted ...

In the contact process for making sulfuric acid, sulfur is first burned to SO 2 . Environmental

Question:

In the “contact process” for making sulfuric acid, sulfur is first burned to SO₂. Environmental restrictions allow no more than 0.30% of this SO₂ to be vented to the atmosphere.

(a) If enough sulfur is burned in a plant to produce 1.80 × 10⁶ kg of pure, anhydrous H₂SO₄ per day, what is the maximum amount of SO₂ that is allowed to be exhausted to the atmosphere?

(b) One way to prevent any SO₂ from reaching the atmosphere is to “scrub” the exhaust gases with slaked lime, Ca(OH)₂:

Ca(OH)₂(s) + SO₂(g) → CaSO₃(s) + H₂O(ℓ) 2 CaSO₃(s) + O₂(g) → 2 CaSO₄(s)

What mass of Ca(OH)₂ (in kilograms) is needed to remove the SO₂ calculated in part (a)?

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