
Chemical Equilibrium and Thermodynamics Worksheet

Quiz
•
Chemistry
•
11th Grade
•
Hard
+7
Standards-aligned
Mr. Poyser
Used 1+ times
FREE Resource
79 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Umar and Louis are observing a chemical reaction in their science class. Which statement is true if the free energy (ΔG) of the reaction they are studying is zero?
The rate of the forward reaction is zero.
The rate of the reverse reaction is zero.
The reaction is approaching equilibrium.
The reaction is at equilibrium.
Answer explanation
When the free energy (ΔG) of a reaction is zero, it indicates that the forward and reverse reactions occur at the same rate, meaning the system is at equilibrium.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
During a chemistry experiment, Danny and Damilola add a catalyst to a reaction mixture that has reached equilibrium. The value of the equilibrium constant
decreases
increases
remains the same
Answer explanation
A catalyst speeds up the rate of reaching equilibrium but does not change the position of equilibrium or the value of the equilibrium constant. Therefore, the equilibrium constant remains the same.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Jaeda and Umar are conducting an experiment. If they increase the temperature of a chemical system at constant pressure, the rate of the forward reaction will
decrease
increase
remain the same
Answer explanation
Increasing the temperature at constant pressure typically favors the endothermic direction of a reaction. If the forward reaction is endothermic, its rate will increase with temperature, making 'increase' the correct choice.
Tags
NGSS.HS-PS1-5
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
During a chemistry experiment, Deshaun and Jaeda are observing a reaction in a closed container. If O2 is added to the system at constant pressure and temperature, what will happen to the number of moles of HCl?
decrease
increase
remain the same
Answer explanation
Adding O2 shifts the equilibrium of the reaction involving HCl, leading to a decrease in the concentration of HCl as it reacts to form products. Therefore, the number of moles of HCl will decrease.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Jaeda and Damilola are conducting an experiment with a chemical reaction at constant temperature. If they increase the pressure on the system, the value of the equilibrium constant for the reaction will
decrease
increase
remain the same
Answer explanation
Increasing pressure shifts the equilibrium towards the side with fewer moles of gas. If the reaction produces more moles of gas, the equilibrium constant will increase, making the correct answer 'increase'.
Tags
NGSS.HS-PS1-6
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
During a science experiment, Umar and Jaeda are investigating phase changes at 1 atmosphere of pressure. Which equilibrium is correctly associated with the Kelvin temperature at which it occurs?
ice-water equilibrium at 0 K
ice-water equilibrium at 32 K
steam-water equilibrium at 212 K
steam-water equilibrium at 373 K
Answer explanation
The steam-water equilibrium occurs at 373 K (100°C) at 1 atmosphere pressure, which is the boiling point of water. The other options incorrectly associate temperatures with their respective equilibria.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Jaeda and Danny place a sealed flask of water at 298 K on their classroom desk. After some time, the water is in equilibrium with its vapor inside the flask. This is an example of:
chemical equilibrium
phase equilibrium
solution equilibrium
static equilibrium
Answer explanation
This scenario illustrates phase equilibrium, where liquid water and its vapor coexist in a sealed environment at a constant temperature. The system is balanced between the liquid and vapor phases.
Create a free account and access millions of resources
Similar Resources on Wayground
75 questions
AP Chemistry Thou Shall Not Forget

Quiz
•
10th Grade - University
84 questions
Entropy and Spontaneous Reaction

Quiz
•
10th Grade - University
84 questions
Entropy Enthalpy Spontaneous Reactions

Quiz
•
10th Grade - University
74 questions
2023 ~ K and E review ~ Mr. Kuster

Quiz
•
9th - 12th Grade
75 questions
AP Chemistry Thou Shall Not Forget Unit 4

Quiz
•
10th Grade - University
75 questions
Unit 8 - Thou Shalt Not Forget AP Chemistry

Quiz
•
10th Grade - University
75 questions
AP Chemistry Thou Shalt Not Forget Unit 8

Quiz
•
10th Grade - University
75 questions
Unit 8 - Thou Shalt Not Forget AP Chemistry

Quiz
•
10th Grade - University
Popular Resources on Wayground
11 questions
Hallway & Bathroom Expectations

Quiz
•
6th - 8th Grade
20 questions
PBIS-HGMS

Quiz
•
6th - 8th Grade
10 questions
"LAST STOP ON MARKET STREET" Vocabulary Quiz

Quiz
•
3rd Grade
19 questions
Fractions to Decimals and Decimals to Fractions

Quiz
•
6th Grade
16 questions
Logic and Venn Diagrams

Quiz
•
12th Grade
15 questions
Compare and Order Decimals

Quiz
•
4th - 5th Grade
20 questions
Simplifying Fractions

Quiz
•
6th Grade
20 questions
Multiplication facts 1-12

Quiz
•
2nd - 3rd Grade