GATE CE 2024 Set 2 — Question 61
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Environmental Engineering → Municipal Solid Waste → Waste Characteristics
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Question
An organic waste is represented as C O H N S.
(Atomic weights: S-32, H-1, C-12, O-16, N-14).
Assume complete conversion of S to SO while burning.
SO generated (in grams) per kg of this waste is ___________
(rounded off to 1 decimal place).
(Atomic weights: S-32, H-1, C-12, O-16, N-14).
Assume complete conversion of S to SO while burning.
SO generated (in grams) per kg of this waste is ___________
(rounded off to 1 decimal place).
Correct answer
9.9 to 10.2
Solution
1.Calculate the molecular weight of the organic waste (C O H N S):
g/mol
2.Determine the mass of Sulfur (S) in 1 mole of waste:
Mass of S = 32 g3.According to the reaction , 1 mole of S (32 g) produces 1 mole of SO (32 + 2 16 = 64 g).
4.Calculate the mass of SO generated per kg (1000 g) of waste:
Mass of SO = gMass of SO = gRounding to one decimal place, we get 10.1 g.
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