A mixture of CS₂ and H₂S when oxidized, yields a mixture of CO₂, SO₂ and H₂O(g), which exerts a pressure of 7.2 atm, when collected in 82.1 L vessel at 327°C. To oxidize SO₂ in the mixture, 5 L of 2 N

Question

A mixture of CS₂ and H₂S when oxidized, yields a mixture of CO₂, SO₂ and H₂O(g), which exerts a pressure of 7.2 atm, when collected in 82.1 L vessel at 327°C. To oxidize SO₂ in the mixture, 5 L of 2 N - iodine was required. Moles of CS₂ in the mixture is

TestHub · Accepted Answer

Total gas moles = PV/RT = 7.2 × 82.1/0.0821 × 600 = 12 mol. Iodine: 5 × 2 = 10 eq = 5 mol I₂, and SO₂ + I₂ go 1:1, so SO₂ = 5 mol. Let x = CS₂, y = H₂S: CO₂ = x, SO₂ = 2x + y. From SO₂: 2x + y = 5; counting CO₂ + SO₂ toward the 12 mol: 3x + y = 12. Subtracting gives x = 7. Ans: 7.

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