Chemical Engineering Questions and Answers – Heat of Solution, Dissolution and Mixing

This set of tricky Chemical Engineering questions and answers focuses on “Heat of Solution, Dissolution and Mixing”.

1. A mixture contains 20% of A with Heat Capacity 10 J/^oC and 80% of B with Heat Capacity 5 J/^oC, what is the Heat Capacity of mixture?
a) 6 J/^oC
b) 7 J/^oC
c) 8 J/^oC
d) 9 J/^oC
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2. A mixture contains 40% of A with Heat Capacity 15 J/^oC and 60% of B with Heat Capacity 10 J/^oC, what is the Heat Capacity of mixture?
a) 11 J/^oC
b) 12 J/^oC
c) 13 J/^oC
d) 14 J/^oC
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3. A mixture contains 50% of A with Heat Capacity 10 J/^oC and 50% of B with Heat Capacity 20 J/^oC, what is the Heat Capacity of mixture?
a) 12 J/^oC
b) 15 J/^oC
c) 17 J/^oC
d) 18 J/^oC
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4. A mixture contains 20% of A with Heat Capacity 25 J/^oC, 30% of B with Heat Capacity 20 J/^oC, and 50% of C with Heat Capacity 10 J/^oC, what is the Heat Capacity of mixture?
a) 10 J/^oC
b) 14 J/^oC
c) 16 J/^oC
d) 20 J/^oC
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5. A mixture contains 30% of A with Heat Capacity 10 J/^oC, 30% of B with Heat Capacity 20 J/^oC, and 40% of C with Heat Capacity 35 J/^oC, what is the Heat Capacity of mixture?
a) 14 J/^oC
b) 17 J/^oC
c) 19 J/^oC
d) 23 J/^oC
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6. What is the enthalpy of a mixture having 10% of A with enthalpy 10 J, and 90% of B with enthalpy 20 J?
a) 10 J
b) 15 J
c) 18 J
d) 19 J
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7. What is the enthalpy of a mixture having 20% of A with enthalpy 15 J, and 80% of B with enthalpy 25 J?
a) 17 J
b) 19 J
c) 23 J
d) 28 J
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8. What is the enthalpy of a mixture having 40% of A with enthalpy 50 J, and 60% of B with enthalpy 25 J?
a) 30 J
b) 35 J
c) 40 J
d) 45 J
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9. What is the enthalpy of a mixture having 20% of A with enthalpy 20 J, 30% of B with enthalpy 40 J, and 50% of C with enthalpy 20 J?
a) 26 J
b) 29 J
c) 31 J
d) 34 J
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10. What is the enthalpy of a mixture having 10% of A with enthalpy 10 J, 30% of B with enthalpy 30 J, and 60% of C with enthalpy 25 J?
a) 21 J
b) 25 J
c) 27 J
d) 28 J
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11. What is the enthalpy change of solution if the enthalpy change of solute is 10 J, and enthalpy of solvent is 15 J?
a) 10 J
b) 15 J
c) 25 J
d) 40 J
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12. What is the enthalpy change of 8 mole solution if the enthalpy change of 5 mole solute is 10 J/mole, and enthalpy of 2 mole solvent is 15 J/mole?
a) 10 J/mole
b) 12 J/mole
c) 13 J/mole
d) 15 J/mole
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13. What is the heat evolved when a gaseous solute is mixed with liquid solvent?
a) Heat of solution
b) Heat of mixing
c) Heat of dissolution
d) All of the mentioned
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14. What is the heat evolved when a liquid solute is mixed with liquid solvent?
a) Heat of solution
b) Heat of mixing
c) Heat of dissolution
d) All of the mentioned
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15. Heat of solution of a mixture is 10 J, what is the heat dissolution?
a) -10 J
b) 10 J
c) 0
d) Cannot be determined
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Sanfoundry Global Education & Learning Series – Basic Chemical Engineering.

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