Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Day 2 - Chemical Engineering Principles > Physical Chemistry > Flashcards

Physical Chemistry Flashcards

1
Q

An ideal gas will only be considered in the following operating parameters

A

Low Pressure, High Temp

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Which of the following is false regarding absolute zero?
A. All molecules will stop moving
B. Absolute zero can be achieved
C. Temperature is 0 K
D. Temperature is 0 R

A

B.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

For a real gas, what causes the deviation from the ideal pressure at a molecular level?
A. Energy is lost for each collision against the sides of the container
B. Energy is lost due to the collision of molecules with one another
C. Intermolecular forces of attraction of the molecules with one another
D. Molecules randomly hit the sides of the wall with less force than usual

A

C.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

When gas molecules collide, they experience
_____ collision

A

Perfectly elastic

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Which of the ff is false with KMT?
a.Gas molecules move in random motion
b.Due to the collision of gas molecules with each other, some kinetic energy is lost
c. The temperature of the whole system does not change with time
d. The size of the molecules is negligible

A

B.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

This is the pressure exerted by the gas molecules that are in equilibrium with the liquid.

A

Vapor Pressure

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

The internal energy of an ideal gas depends on?

A

Absolute temperature

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Which of the ff is not conserved in any process?
A. Mass
B. Energy
C. Momentum
D. Entropy

A

D.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

An isentropic process is?

A

Reversible and adiabatic

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Increasing the temperature of the cold reservoir ____ the Carnot efficiency.
A. Increases
B. Decreases
C. Does not change
D. NOTA

A

B. Decrease

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

If the entropy of a system decreases, the entropy of its surroundings
a. Must always increase
b. Must always decrease
c. May increase or decrease
d. Not enough information to answer the question

A

A.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

The amount of heat absorbed when CO2 gas reacts with a solid CaO to form solid CaCO3 is measured in a bomb calorimeter. The data obtained give a direct measure of:
a.ΔU
b.VΔP
c.ΔH
d.CP

A

A.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Heat required to raise the temperature of 1lbm of water by 1˚F

A

BTU

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

The Third Law of Thermodynamics is attributed to?

A

Walther Nernst

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

The equilibrium-intensive state of a system is described by specifying the temperature, pressure, and?

A

Mole fractions

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

The fugacity of a real gas is equal to

A

The pressure of an ideal gas which has the same chemical potential as the real gas

17
Q

An adiabatic process is one in which the system under investigation is thermally isolated so that there is no exchange of heat with the surroundings. Thus, the work done on a closed system in an adiabatic process is ____.
a. Equal to zero
b. Not equal to the exchange of heat with surroundings
c. Equal to the increase in internal energy of the system
d. Not equal to the increase in internal energy of the system

A

C.

18
Q

It states that when a stress is placed on a system in equilibrium, the system tends to change in a way that relieves the stress.

A

Le Chatelier’s Principle

19
Q

Determine which of the following occurrences tells us what happens when Le Chatelier’s principle is applied whether these are true or false.
1. The addition of a component causes the equilibrium to shift to the opposite side
2. The removal of a component causes the equilibrium to the side from which the component is removed
3. Increasing the temperature drives an exothermic reaction to the side of the reactants, an endothermic equilibrium to the side of the products
4. The addition of a catalyst has NO effect on the position of the equilibrium
a.T, F, T, F
b.T, T, T, T
c.F, T, F, T
d.F, F, F, F

A

B.

20
Q

It is a function of the state of the system and determines whether a physical change or chemical reaction can occur simultaneously in a closed system.

A

Entropy

21
Q

Is is the opposite of enthalpy

A

Entropy

22
Q

It determines the time required for a reaction to proceed and complete

A

Entropy

23
Q

Choose the process that occurs with a decrease in entropy.
a.Freezing of water
b.Boiling of water
c.Dissolving salt in water
d.Sublimation of dry ice

A

A. (from liquid to solid)

24
Q

Which of the following does not have a zero enthalpy of formation at 298.15K?
a.Li(g) c. Hg(l)
b.He(g) d.Br2(l)

A

A. (as its natural state should be solid)

Day 2 - Chemical Engineering Principles (8 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions