Le Chatelier Principle

Quiz
•
Science
•
11th Grade
•
Hard
Standards-aligned
Lisa Thompson
FREE Resource
25 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Equilibrium for 2CrO42- + 2H+ → Cr2O72- + H2O. What happen when H+ ion are added to the system?
Position of equilibrium will shift to left
Color of system will turn from orange to yellow
Kc will be higher
Equilibrium will shift to right to decrease the added H+ ion
Tags
NGSS.HS-PS1-5
NGSS.HS-PS1-6
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
For CoCI42- +6H2O →Co(H2O)62+ + 4CI-. What happen when CI- ions are added?
Position of equilibrium will shift to right
Color of system will turn from blue to pink
Concentration of reactants and products remain unchanged
Equilibrium shift to left to reduce the added CI- ions
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
For N2O4 (colorless)→ 2NO2 (brown). By reducing pressure, equilibrium is shift to right. WHY?
Shift to the right will increase the rate of reaction
Color of system will turn from colorless to brown.
More particles on the right, so Kc will increase
More particles on the right, so pressure can increase again
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
For N2O4 → NO2 (ΔH = +ve). What will happen when temperature is increased?
Position of equilibrium will shift to left
Position of equilibrium will shift to right
No change in position of equilibrium
Equlibrium will not be affected
Tags
NGSS.HS-PS1-4
NGSS.HS-PS1-5
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What does Le Chatelier's Principle state about a system at equilibrium when it is subjected to a change in concentration, temperature, or pressure?
The system will shift in the direction that increases the change.
The system will remain unchanged.
The system will shift in the direction that opposes the change.
The system will shift in random directions until a new equilibrium is established.
Tags
NGSS.HS-PS1-5
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
According to Le Chatelier's Principle, if the concentration of a reactant is increased, the equilibrium of the reaction will:
Shift to the left, favoring the formation of reactants
Shift to the right, favoring the formation of products
Remain unchanged
Increase the overall reaction rate without shifting the equilibrium
Tags
NGSS.HS-PS1-5
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
2SO2(g)+O2(g)⇌2SO3(g)
Adding SO2(g) will
shift equilibrium right
shift equilibrium left
increase rate of reaction
have no change
Tags
NGSS.HS-PS1-5
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