Dynamic Equilibrium

This symbol indicates that a reaction is ____________

• reversible
• irreversible

Which of the following is incorrect? 
A dynamic equilibrium can be achieved...

• From 100% reactants
• From 100% products
• In a closed system
• In an open system

2SO₂(g)+O₂(g)⇌2SO₃(g)

Removing O₂(g) will

• shift equilibrium forward

• shift equilibrium reverse

• no shift

2SO₂(g)+O₂(g)⇌2SO₃(g)

Adding O₂(g) will

• shift equilibrium forward

• shift equilibrium reverse

• no shift

2SO₂(g)+O₂(g)⇌2SO₃(g)

Adding SO₂(g) will

• shift equilibrium forward

• shift equilibrium reverse

• no shift

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

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.

The idea that when a system at equilibrium is stressed, it will react to relieve that stress and return to equilibrium is known as:

• Boyle's Law
• Le Chatelier's Principle
• Charles Law
• Denninger's Law

For the reaction...
N_{2 (g)} +  3 H_2 (g) <−> 2 NH_{3 (g)}

If the pressure in the system is increased,  which substance will increase in concentration?

• N₂
• H₂
• N₂ and H₂
• NH₃

Changes in pressure will only affect substances that are in the __________ state.

• gaseous
• liquid
• solid
• plasma