Chemical Process Calculation Questions and Answers – Limiting and Excess Reactant-I

This set of Chemical Process Calculation Multiple Choice Questions & Answers (MCQs) focuses on “Limiting and Excess Reactant-I”.

1-7. For the given reaction
C₅H₁₂ + 8 O₂ → 5 CO₂ + 6 H₂O
If the reactants C₅H₁₂ & O₂ are having 2 moles an 8 moles of initial feed respectively.
1. Which is the excess reactant in the reaction?
a) C₅H₁₂
b) O₂
c) CO₂
d) H₂O
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2. Which is the limiting reactant in the reaction?
a) C₅H₁₂
b) O₂
c) CO₂
d) H₂O
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3. How many moles of C₅H₁₂ are there when the reaction completes?
a) 0
b) 1
c) 2
d) 3
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4. How many moles of O₂ are there when the reaction completes?
a) 0
b) 2
c) 4
d) 6
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5. How many moles of CO₂ produced in the reaction?
a) 5
b) 6
c) 7
d) 8
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6. How many moles of H₂O produced in the reaction?
a) 5
b) 6
c) 7
d) 8
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7. What is the extent of the reaction?
a) 0
b) 1
c) 2
d) 3
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8-10. For the given reaction
CO₂ + 4 H → CH₂O + H₂O
In the feed there are 4 moles of CO₂, 10 moles of H. If the reaction happens then
8. What is the number of moles of the extent reactant in the reaction after completion?
a) 0
b) 1
c) 1.5
d) 2.5
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9. What is the extent of the reaction?
a) 0
b) 1
c) 1.5
d) 2.5
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10. What is the gms of CO₂ produced in the reaction?
a) 0
b) 1
c) 1.5
d) 2.5
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Sanfoundry Global Education & Learning Series – Chemical Process Calculation.
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