Chemical Process Calculation Questions and Answers – Species Mole Balances-I

This set of Chemical Process Calculation Multiple Choice Questions & Answers (MCQs) focuses on “Species Mole Balances-I”.

1-5. For a given reaction
C₂H₆ + Cl₂ → C₂H₅Cl + HCl
Assume that the percentage conversion of the limiting reactant is 60% and the feed composition in mole percent is 50% C₂H₆, 40% Cl₂ and 10% N₂.
1. What is the mole percent of C₂H₆ in the product?
a) 24
b) 26
c) 40
d) 60
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2. What is the mole percent of Cl₂ in the product?
a) 16
b) 24
c) 26
d) 40
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3. What is the mole percent of C₂H₅Cl in the product?
a) 16
b) 24
c) 26
d) 40
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4. What is the mole percent of HCl in the product?
a) 16
b) 24
c) 26
d) 40
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5. What is the mole percent of N₂ in the product?
a) 10
b) 16
c) 24
d) 40
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6-10. In a bioreactor, these following reaction can occur to perform the fermentation process-
C₆H₁₂O₆ → 2C₂H₅OH + 2CO₂
C₆H₁₂O₆ → 2C2H3CO₂H + 2H₂O
The tank is initially charged with 6000 kg of 15% solution of glucose in water. After fermentation, 160 kg of CO₂ produced and 100 kg of unreacted glucose left in the broth.

6. How much water is there in the tank after fermentation?
a) 94.45 kg
b) 5100 kg
c) 5194.45 kg
d) None of the mentioned
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7. How many moles of C₆H₁₂O₆ reacted in the first reaction?
a) 1.414
b) 1.818
c) 2.424
d) 4.848
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8. How much Ethanol is there in the product in kgs?
a) 67.43
b) 167.43
c) 267.43
d) 367.43
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9. How much propenoic acid is there in the product in kgs?
a) 178
b) 278
c) 378
d) 478
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10. How many kgs of C₆H₁₂O₆ is used in second reaction?
a) 127.54
b) 227.54
c) 327.54
d) 427.54
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Sanfoundry Global Education & Learning Series – Chemical Process Calculation.
To practice all areas of Chemical Process Calculation, here is complete set of 1000+ Multiple Choice Questions and Answers.