K and E, reactions, Keq Test review

Which has higher entropy?

A. A small pool of water sits in an enclosed glass chamber.

B. An enclosed glass chamber is filled with water vapor.

• A

• B

Entropy increases from solid, liquid to gas. Why?

• Molecular disorder increases
• Molecular randomness decreases
• Molecules are more energetic
• Molecules are more reactive

Which of the following correctly describes the entropy changes of the water molecules and the universe when a sample of water freezes?

• A

• B

• C

• D

Which statement is true about the ENTROPY?

• Entropy refers to DISORDER, the unusable energy that escapes a system.
• Entropy refers to the balance of temperature among two or more systems.
• Entropy refers to the average kinetic energy of the molecules.
• Entropy refers to the inability to destroy or create energy. 

Which state of H₂O  has the greatest entropy?

• Ice
• Water
• Vapor

At what time (in seconds) is equilibrium established?

• 0 seconds
• 1 second
• 5 seconds
• 10 seconds

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

• to the left
• to the right
• to the left and right 
• neither left nor right

For the reaction...
N₂  +  O₂  <=>  2NO
If  O₂ is removed, the  concentration of N₂ will _______.

• increase
• decrease
• remain the same
• double

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

What are [A] and [B]?

• concentration of reactants
• concentration of products
• energy of reactants
• energy of products