
Chemical Equilibrium
Authored by c syarehim
Chemistry
1st Grade
NGSS covered
Used 81+ times

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20 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
This following is true about the graph of the concentration of reactant and products againts time except:
[A] decrease
The system is in the state of equilibrium
[B] decrease with time
After certain time, [A] and [B] remains unchanged, but the reaction did not stop
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
At equilibrium, __________.
all chemical reactions have ceased
the rates of the forward and reverse reactions are equal
the rate constants of the forward and reverse reactions are equal
the value of the equilibrium constant is 1
) the limiting reagent has been consumed
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
2A + 3B <----> 2AB
The forward reaction forms the substance __________.
A
AB
B
A + B
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Define chemical equilibrium.
A reaction is reversible.
A state where the concentration of the reactants is equal to the concentration of the products.
A state where the rate of a forward reaction is equal to the rate of the reverse reaction.
A state where the reaction stops and no further change in concentration occurs.
5.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
What is the Kc expression for this reaction?
2 NO(g) + O2(g) ⇌ 2 NO2(g)
Tags
NGSS.HS-PS1-7
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What are [A] and [B]?
Tags
NGSS.HS-PS1-6
NGSS.HS-PS1-5
7.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
What is the equilibrium expression for:
Fe3O4(s) + 4H2(g) <=> 3Fe(s) + 4H2O(g)
Kc =
Tags
NGSS.HS-PS1-6
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