This set of Chemical Process Calculation Multiple Choice Questions & Answers (MCQs) focuses on “Stoichiometry – VI”.
1. What is the coefficient of CH4 in the combustion reaction CH4 + O2 → CO2 + H2O?
a) 1
b) 4
c) 5
d) 6.5
View Answer
Explanation: The coefficient of CH4 is 1 to balance the carbon atoms on both sides.
2. What is the coefficient of O2 in the combustion reaction CH4 + O2 → CO2 + H2O?
a) 1
b) 2
c) 3
d) 4
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Explanation: Two oxygen atoms are required to balance the reaction with carbon dioxide and water.
3. What is the coefficient of CO2 in the combustion reaction CH4 + O2 → CO2 + H2O?
a) 1
b) 4
c) 5
d) 6.5
View Answer
Explanation: The reaction produces 1 mole of CO2 per mole of CH4 burned.
4. What is the coefficient of H2O in the combustion reaction CH4 + O2 → CO2 + H2O?
a) 1
b) 2
c) 5
d) 6
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Explanation: The combustion of 1 mole of CH4 produces 2 moles of H2O.
5. How many moles of CH4 are required to produce 10 moles of H2O in the combustion reaction (consider O2 in excess)?
a) 1
b) 2
c) 5
d) 10
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Explanation: 1 mole of CH4 produces 2 moles of H2O, so 5 moles of CH4 are required to produce 10 moles of H2O.
6. How many moles of O2 are required to produce 10 moles of H2O in the combustion reaction (consider C4H10 in excess)?
a) 10
b) 20
c) 25
d) 30
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Explanation: 1 mole of O2 produces 1 mole of H2O, so 10 moles of O2 are needed for 10 moles of H2O.
7. How much CO2 in kilograms is produced with 1 mole of CH4 in the combustion reaction (consider O2 in excess)?
a) 44
b) 88
c) 132
d) 176
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Explanation: 1 mole of CH4 produces 1 mole of CO2. The molar mass of CO2 is 44 g, which is 0.044 kg.
8. How much CO2 in kilograms is produced with 1 mole of O2 in the combustion reaction (consider C4H10 in excess)?
a) 22
b) 88
c) 132
d) 176
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Explanation: 2 moles of O2 produce 1 mole of CO2, so with 1 mole of O2, 0.022 kg of CO2 is produced.
9. How many moles of CH4 are required to produce 36 grams of H2O in the combustion reaction?
a) 1
b) 2
c) 3
d) 4
View Answer
Explanation: 1 mole of CH4 produces 2 moles of H2O (36 grams).
10. How many moles of O2 are required to produce 90 grams of H2O in the combustion reaction?
a) 5
b) 10
c) 15
d) 20
View Answer
Explanation: 1 mole of O2 produces 1 mole of H2O, and 90 grams of H2O is 5 moles, so 5 moles of O2 are required.
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.
