Entropy and Enthalpy

Entropy and Enthalpy

11th Grade - University

20 Qs

quiz-placeholder

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Entropy and Enthalpy

Entropy and Enthalpy

Assessment

Quiz

Chemistry

11th Grade - University

Practice Problem

Hard

NGSS
HS-PS1-4, HS-PS3-1, HS-PS3-4

+3

Standards-aligned

Created by

Charles Martinez

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20 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The __________ law of thermodynamics states that entropy is always increasing. 

first
second
third
zeroth

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Temperature is a measure of average _________ energy of individual atoms.

heat

potential

mechanical

kinetic

Tags

NGSS.HS-PS3-2

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

ΔH value in an endothermic reaction is a positive number.

True
False

4.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

Which phase of matter has the greatest motion and least orderly arrangement?

solid
liquid
gas

5.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

The equation that relates enthalpy, temperature and entropy is

Hess's Law
Second Law of Thermodynamics
Gibbs Free Energy
Calorimetry

6.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

 For which of these processes is the value of ΔH expected to be positive?
1.  The temperature increases when calcium chloride dissolves in water.
2.  Steam condenses to liquid water
3.  Water boils
4.  Dry ice sublimates

4 only
1 only
3 and 4 only
2 and 3 only

Tags

NGSS.HS-PS3-4

7.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

6.  The formation ½ A2 + 2 B2 + C --> CAB4 has an enthalpy of formation of -104 kJ and a change in entropy of -60.8 J/K at 30 °C. What is the free energy and spontaneity of the reaction?  

-85.6 kJ, spontaneous
-18.3 kJ, not spontaneous
+18.3 kJ, spontaneous 
+85.6 kJ, not spontaneous 

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-1

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