Chemical Engineering Questions and Answers – Effects of Mixing into Energy Balance

This set of tough Chemical Engineering questions and answers focuses on “Effects of Mixing into Energy Balance”.

1. What is the heat of solution in the energy balance?
a) Heat of dissolution
b) Heat of reaction
c) Heat of formation
d) None of the mentioned
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2. What is required in the calculation of heat of reaction in the energy balance of mixing?
a) Heat of formation
b) Sensible Heat
c) Latent heat
d) All of the mentioned
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3. How is the graph of the heat of solution and dilution?
a) Straight Line
b) Curve with finite heat of solution at infinite dilution
c) Curve with Infinite heat of solution at infinite dilution
d) None of the mentioned
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4. Which of the following is required for the calculation of heat of reaction in the energy balance?
a) Heat of solution at reference state
b) Heat of dissolution at reference state
c) Heat of formation
d) All of the mentioned
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5. What is the heat of dissolution if the heat of reaction is 10 J in the energy balance?
a) -10 J
b) 10 J
c) 0
d) Cannot be determined
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6. What is the heat transferred from the system if the output sensible heat is 10 J, input sensible heat is 15 J, and heat of solution is 20 J?
a) 10 J
b) 15 J
c) 20 J
d) 25 J
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7. What is the heat transferred from the system if the output sensible heat is 5 J, input sensible heat is 25 J, and heat of solution is 20 J?
a) 0
b) 5 J
c) 10 J
d) 15 J
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8. What is the heat transferred from the system if the output sensible heat is 5 J, input sensible heat is 20 J, and heat of solution is 10 J?
a) -10 J
b) -5 J
c) 0
d) 10 J
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9. What is the heat transferred from 5 mole of the system if the output sensible heat is 1 J/mole, input sensible heat is 3 J/mole, and heat of solution is 4 J/mole?
a) 0
b) 5 J
c) 10 J
d) 20 J
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10. What is the heat transferred from 2 mole of the system if the output sensible heat is 3 J/mole, input sensible heat is 2 J/mole, and heat of solution is 2 J/mole?
a) 2 J
b) 3 J
c) 5 J
d) 6 J
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11. Enthalpy-Concentration diagram represents which type of solution?
a) Binary
b) Tertiary
c) Quaternary
d) None of the mentioned
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12. What is the final enthalpy of the solution made by mixing 100 grams of 10% NaOH having enthalpy 40 J with 300 grams of 90% NaOH having enthalpy 20 J?
a) 10 J
b) 15 J
c) 25 J
d) 40 J
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13. What is the final enthalpy of the solution made by mixing 10 grams of solution A having enthalpy 10 J with 40 grams of solution B having enthalpy 30 J?
a) 14 J
b) 18 J
c) 22 J
d) 26 J
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14. What is the final enthalpy of the solution made by mixing 20 grams of solution A having enthalpy 5 J with 5 grams of solution B having enthalpy 10 J?
a) 2 J
b) 4 J
c) 6 J
d) 7 J
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15. What is the final enthalpy of the solution made by mixing 5 grams of solution A having enthalpy 20 J with 15 grams of solution B having enthalpy 40 J?
a) 10 J
b) 20 J
c) 25 J
d) 35 J
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