Dynamic equilibrium
Question 1
.........................This symbol indicates that a reaction is
reversible
irreversible
Question 2
When the rate of the forward reaction is equal to the rate of backward reaction, .the system is said to be in
Chemical Equilibrium
Chemical Balance
Chemical Constant
Chemical Reaction
Question 3
Define chemical equilibrium.
A reaction is reversible.
The concentration of the reactants is equal to the concentration of the products.
The rate of a forward reaction is equal to the rate of the reverse reaction.
The reaction stops and no further change in concentration occurs
Question 4
Which is the reactant - and why?
A, as concentration decreases
A, as concentration decreases
A, as concentration increases
B, as concentration increases
Question 5
At what time the reaction reached equilibrium?
t1
t2
t3
t4
Question 6
What is the Kc expression for this reaction?
2 NO(g) + O2(g) ⇌ 2 NO2(g)
Kc = [NO2]^2 / [NO]^2 [O2]
Kc = [NO]2 [O2] / [NO2]^2
Kc = [NO]2 [O2] [NO2]^2
Kc = [NO2]^2 / [NO]^2 + [O2]