LeChatlier's practice

When writing an endothermic reaction, heat energy is stated as

• product
• catalyst
• reactant

Tags

NGSS.HS-PS1-4

An exothermic reaction is allowed to reach equilibrium. If heat energy is then removed, the equilibrium will shift

• toward the middle
• toward the reactant side
• toward the product side

Tags

NGSS.HS-PS1-6

For the reaction...
SO_2(g) + O_2(g) <−>  SO_3(g)
If the concentration of SO_2(g)  is increased, the equilibrium of the reaction will ___________.

• shift to the left
• shift to the right
• not shift

Tags

NGSS.HS-PS1-5

NGSS.HS-PS1-6

For the reaction...
SO_2(g) + O_2(g) <−>  SO_3(g)
If the equilibrium shifts to the right, the concentration of O_2(g) will ___________.

• increase
• decrease
• remain the same

Tags

NGSS.HS-PS1-5

NGSS.HS-PS1-6

For the reaction...
energy +  N_2(g)  +  O_2(g)  <−>  2NO_(g)
If  O_2(g) is removed, the  concentration of N₂ will _______.

• increase
• decrease
• remain the same
• double

Tags

NGSS.HS-PS1-5

When  ΔH  is negative it represents a(n)

• exothermic reaction 
• endothermic reaction 

Tags

NGSS.HS-PS1-4

The three factors that affect the equilibrium of a reaction are temperature, pressure and __________. 

• energy
• concentration 
• enthalpy 
• ice 

Tags

NGSS.HS-PS1-6

2SO₂(g)+O₂(g)⇌2SO₃(g)
Removing O₂(g) will

• shift equilibrium right
• shift equilibrium left
• decrease temperature
• have no change

2SO₂(g)+O₂(g)⇌2SO₃(g)
Adding SO₃ (g)

• shift equilibrium right
• shift equilibrium left
• increase pressure
• have no change

Tags

NGSS.HS-PS1-5

• The graph represents an exothermic reaction 
• The graph represents a specific heat reaction 
• The graph represents a constant pressure reaction 
• The graph represents an endothermic reaction 

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-1