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WorksheetsLe Chatelier and Equilibrium
Total questions: 15
Worksheet time: 15mins
For the reaction...
N2 (g) + 3 H2 (g) <=> 2 NH3 (g)
If the pressure in the system is increased, which substance(s) will increase in concentration?
N2 (as 2 mol gas → 4 mol gas)
H2 (as 2 mol gas → 4 mol gas)
N2 and H2 (as 2 mol gas → 4 mol gas)
NH3 (as 4 mol gas → 2 mol gas)
What would happen when H2O is added?
Position of equilibrium will shift to left (and become more blue)
Position of equilibrium will shift to right (and become more pink)
Keq will increase as H2O is added
Position of equilibrium will shift to left to reduce the added H2O
What will happen when CI- ions are added?
Position of equilibrium will shift to left and become more pink
Color of system will turn to all pink
Concentration of reactants and products remain unchanged
Position of equilibrium will shift to left to reduce the added CI- ions
2CrO42- + 2H+ → Cr2O72- + H2O
What will happen when H+ ions are added to the system?
Position of equilibrium will shift to left and become more yellow
Color of system will turn all yellow
Color of system will turn all orange
Equilibrium will shift to right and become more orange
This symbol indicates that a reaction is ____________
reversible
irreversible
The following factors affect the position of equilibrium EXCEPT
Concentration
Pressure
Temperature
States of matter
2SO2(g)+1O2(g) ⇌ 2SO3(g) + Heat
Increasing the volume of the container will...
shift equilibrium right
shift equilibrium left
slow rate of reaction
have no change
Which is the reactant - and why?
as concentration decreases
as concentration decreases
as concentration increases
as concentration increases
For the reaction...
N2 + O2 <=> 2NO: Δ H = +182 kJ mol-1.
If the temperature is increased the equilibrium position will shift _______.
to the left
to the right
to the left and right
neither left nor right
Consider the following reaction:
2SO2(g) + O2(g) <=> 2SO3(g): ΔΗ = - 197 kJ mol -1
Which of the following will NOT shift the equilibrium position to the right?
Adding more O2
Adding a catalyst
increasing the pressure
Lowering the temperature
For the reaction...
H2 (g) + Cl2 (g) <=> 2HCl (g) + heat
If the pressure in the system is increased, the equilibrium position will _______.
shift to the left
shift to the right
not shift position at all as 2 mol gas <=> 2 mol gas
When the forward and reverse reactions are occurring at the same rate, the reaction is said to be at:
Chemical equilibrium
Chemical reaction
Chemical constant
Chemical peace
Le Chatelier and Equilibrium
A) Increase the concentration of reactants
B) Increase the concentration of products
C) Decrease the concentration of reactants
D) Decrease the concentration of products
Le Chatelier and Equilibrium
A) Shift to the right
B) Shift to the left
C) No change
D) Increase the rate of reaction
Le Chatelier and Equilibrium
A) Increase temperature
B) Decrease temperature
C) Increase pressure
D) Decrease pressure
