Chemical Process Calculation Questions and Answers – Terminology for a Reaction System-III

This set of Chemical Process Calculation question bank focuses on “Terminology for a Reaction System-III”.

1-9. For the given reaction
A FeS2 + b O2 → c Fe2O3 + d SO2
The reaction is balanced using the minimum values of the balancing coefficients.
1. What is the value of a?
a) 1
b) 2
c) 3
d) 4
View Answer

Answer: d
Explanation: Element Balance.

2. What is the value of b?
a) 11
b) 12
c) 13
d) 14
View Answer

Answer: a
Explanation: Element Balance.

3. What is the value of c?
a) 1
b) 2
c) 3
d) 4
View Answer

Answer: b
Explanation: Element Balance.
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4. What is the value of d?
a) 2
b) 4
c) 6
d) 8
View Answer

Answer: d
Explanation: Element Balance.

5. What is the value of a+b+c-d?
a) 10
b) 20
c) 30
d) 40
View Answer

Answer: a
Explanation: Element Balance.

If for the above reaction, the extent of the reaction is 11 moles reacting.
6. How many moles of FeS2 are required for the reaction?
a) 11
b) 22
c) 33
d) 44
View Answer

Answer: d
Explanation: Required moles of FeS2 = 4(Extent of the reaction).

7. How many moles of O2 are required for the reaction?
a) 121
b) 11
c) 144
d) 12
View Answer

Answer: a
Explanation: Required moles of O2 = 11(Extent of the reaction).
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8. How many moles of Fe2O3 are produced in the reaction?
a) 11
b) 22
c) 33
d) 44
View Answer

Answer: b
Explanation: Produced moles of Fe2O3= 2(Extent of the reaction).

9. How many Kgs of SO2 are produced in the reaction?
a) 5.632
b) 4.632
c) 3.632
d) 2.632
View Answer

Answer: a
Explanation: Produced Kgs of SO2 = 8*(Extent of the reaction)*64.
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10. For a reaction, the extent of reaction equation is Ni = Nio + ϒVi is
Where:
Ni = Moles of species I present in the system after the reaction occurs
Nio = Moles of species I present in the system when the reaction starts
Vi = Stoichiometric coefficient for species i in the specified chemical reaction equation
ϒ = Extent of reaction
a) Correct
b) Incorrect
c) Some of the terms are defined wrong
d) None of the mentioned
View Answer

Answer: a
Explanation: Extent of the reaction for a reaction is, Ni = Nio + ϒVi.

Sanfoundry Global Education & Learning Series – Chemical Process Calculation.
To practice Chemical Process Calculation question bank, here is complete set of 1000+ Multiple Choice Questions and Answers.

If you find a mistake in question / option / answer, kindly take a screenshot and email to [email protected]

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Manish Bhojasia - Founder & CTO at Sanfoundry
Manish Bhojasia, a technology veteran with 20+ years @ Cisco & Wipro, is Founder and CTO at Sanfoundry. He lives in Bangalore, and focuses on development of Linux Kernel, SAN Technologies, Advanced C, Data Structures & Alogrithms. Stay connected with him at LinkedIn.

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