Chemical Process Calculation Multiple Choice Questions & Answers (MCQs) focuses on “Heats of Solutions and Mixing”.
1. ________________ obeys the Raoult’s law at every range of concentration.
a) Ideal Solution
b) Non-Ideal solution
c) Real Solution
d) None of the mentioned
Answer: a
Clarification: Ideal Solution obeys the Raoult’s law at every range of concentration.
2. Benzene + Toluene solution is an example of
a) Ideal Solution
b) Non-Ideal solution
c) Real Solution
d) None of the mentioned
Answer: a
Clarification: Benzene + Toluene solution obeys the Raoult’s law at every range of concentration.
3. When two ideal solution, each having a volume V are mixed. What is the resultant volume of the solution?
a) V
b) 2V
c) Greater than 2V
d) Less than 2V
Answer: b
Clarification: There is no change in volume when two ideal solutions are mixed.
4. When a gaseous or solid solute is mixed with a liquid solvent the energy effect that occurs is referred to as
a) Heat of solution
b) Heat of combustion
c) Heat of reaction
d) None of the mentioned
Answer: a
Clarification: When a gaseous or solid solute is mixed with a liquid solvent the energy effect that occurs is referred to as Heat of solution.
5. When a liquid is mixed with a liquid, the energy effect is called
a) Heat of solution
b) Heat of combustion
c) Heat of reaction
d) Heat of mixing
Answer: d
Clarification: When a liquid is mixed with a liquid, the energy effect is called Heat of the mixing.
6. The negative of the heat of solution or mixing is
a) Heat of solution
b) Heat of dissolution
c) Heat of reaction
d) Heat of mixing
Answer: b
Clarification: The negative of the heat of solution or mixing is Heat of dissolution.
7. The heat of solution can be
a) Positive
b) Negative
c) Both positive and Negative
d) None of the mentioned
Answer: c
Clarification: The heat of the solution can be both positive or negative according to the reaction.
8. Enthalpy-concentration diagram a convenient graphical way to represent enthalpy data for binary solutions that features a plot of specific enthalpy versus concentration with temperature as a parameter.
The above given statement is
a) True
b) False
c) Never false
d) None of the mentioned
Answer: a
Clarification: Enthalpy-concentration diagram a convenient graphical way to represent enthalpy data for binary solutions that features a plot of specific enthalpy versus concentration with temperature as a parameter.
9. A solution composed of several components in which a property is the weighted sum of the properties of the individual components. The solution is
a) Ideal Solution
b) Non-Ideal solution
c) Real Solution
d) None of the mentioned
Answer: a
Clarification: An ideal solution is composed of several components in which a property is the weighted sum of the properties of the individual components.
10. ________________ is the heat of solution for the combination of 1 mole of solute with n moles of solvent.
a) Integral heat of solution
b) Heat of dissolution
c) Heat of reaction
d) Heat of mixing
Answer: a
Clarification: Integral heat of solution is the heat of solution for the combination of 1 mole of solute with n moles of solvent.