Equilibrium Practice

This symbol indicates that a reaction is:

• reversible
• not reversible

At what time does the reaction reach equilibrium?

• t₁
• t₂
• t₃
• t₄

Tags

NGSS.HS-PS1-5

During equilibrium, the rates of the forward and the reverse reaction are ________

• the same 
• unequal
• unequal for exothermic reactions
• unequal for endothermic reactions

Tags

NGSS.HS-PS1-5

NGSS.HS-PS1-6

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

Tags

NGSS.HS-PS1-6

For the reaction...
SO₂ + O₂  <−>  SO₃
If the concentration of SO₂ is increased, the equilibrium of the reaction will shift ___________.

• left
• right
• left and right 
• neither left nor right

Tags

NGSS.HS-PS1-5

NGSS.HS-PS1-6

For the reaction...
SO₂ + O₂ <−>  SO₃
If the concentration of O₂ is decreased, the equilibrium of the reaction will shift ___________.

• left
• right
• left and right
• neither left nor right

Tags

NGSS.HS-PS1-5

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

For the reaction...
heat  +  N₂  +  O₂  <−>  2NO
If the heat is added to the chemical system, the equilibrium will shift _______.

• left
• right
• left and right
• neither left nor right

For the reaction...
heat  +  N₂  +  O₂  <−>  2NO
If the heat is removed to the chemical system, the equilibrium will shift _______.

• left
• right
• both left and right
• neither left nor right

Tags

NGSS.HS-PS1-5

NGSS.HS-PS1-6

A chemical reaction takes place in a beaker.  What is the system and what are the surroundings?

• System:  Beaker
  Surroundings: Everything 
• System:  Everything
  Surroundings: Everything 
• System:  Everything
  Surroundings: Beaker 
• System:  Beaker
  Surroundings: Beaker