Entropy change

Increase or decrease in entropy? Solid water becoming liquid water

• No change in entropy

• Decrease in entropy

• Increase in entropy

Increase or decrease in entropy? Liquid water becoming water vapor

• No change in entropy

• Decrease in entropy

• Increase in entropy

Increase or decrease in entropy? Gas condensing to form a liquid

• No change in entropy

• Decrease in entropy

• Increase in entropy

Increase or decrease in entropy? Dissolving salt in water

• Decrease in entropy

• Increase in entropy

• No change in entropy

C₃H₈(g) + 5 O₂(g) → 3 CO₂(g) + 4 H₂O(g): Increase or decrease in entropy?

• Increase in entropy
• Decrease in entropy
• No change in entropy

AgNO₃(aq) + NaCl(aq) → AgCl(s) + NaNO₃(aq): Increase or decrease in entropy?

• no change
• decrease
• increase

2 KClO₃(s) → 2 KCl(s) + 3 O₂(g): Increase or decrease in entropy?

• no change
• decrease
• increase

N₂(g) + 3 H₂(g) → 2 NH₃(g): Increase or decrease in entropy?

• no change
• decrease
• increase

4 Fe(s) + 3 O₂(g) → 2 Fe₂O₃(s): Increase or decrease in entropy?

• no change
• decrease
• increase

Increase or decrease in entropy? Freezing liquid water to form ice

• Decrease in entropy

• Increase in entropy

• No change in entropy