

Equilibrium Expressions in Chemistry
Interactive Video
•
Chemistry, Science, Physics
•
9th - 10th Grade
•
Practice Problem
•
Hard
Patricia Brown
FREE Resource
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the main difference between homogeneous and heterogeneous equilibria?
Heterogeneous equilibria involve only gases.
Heterogeneous equilibria involve substances in the same phase.
Homogeneous equilibria involve substances in the same phase.
Homogeneous equilibria involve substances in different phases.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In a homogeneous equilibrium, what is typically the phase of the substances involved?
Solid
Liquid
Gas
Plasma
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why do pure solids and liquids not affect the position of a heterogeneous equilibrium?
Their concentrations change during the reaction.
They are not present in the reaction.
Their concentrations remain constant.
They are always in the gas phase.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In the equilibrium involving calcium carbonate, which component is included in the equilibrium expression?
Carbon dioxide
All components
Calcium carbonate
Calcium oxide
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What happens to the equilibrium expression when solids are involved in a reaction?
Solids increase the reaction rate.
Solids are included in the expression.
Solids are excluded from the expression.
Solids change the equilibrium constant.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
For the reaction of pure water decomposing into gases, which components are included in the equilibrium expression?
Oxygen gas only
Pure water only
Hydrogen gas and oxygen gas
Hydrogen gas only
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If water is in the form of vapor in a reaction, how does it affect the equilibrium expression?
It is excluded from the expression.
It changes the reaction completely.
It is included in the expression.
It has no effect on the expression.
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