Predicting the Sign of Delta S in Entropy Change

What is entropy defined as?

• Order and structure

• Chaos, disorder, or randomness

• Energy and work

• Temperature and pressure

Which physical state has the highest entropy?

• Plasma

• Gases

• Liquids

• Solids

How does the amount of substance affect entropy?

• More substance increases entropy

• Less substance increases entropy

• More substance decreases entropy

• Amount of substance has no effect

What happens to entropy when temperature increases?

• Entropy decreases

• Entropy remains the same

• Entropy fluctuates

• Entropy increases

What is the effect of increasing volume on entropy?

• Entropy fluctuates

• Entropy increases

• Entropy remains the same

• Entropy decreases

In the reaction 2 Mn + O2 -> 2 MnO, what happens to entropy?

• Entropy increases

• Entropy decreases

• Entropy remains the same

• Entropy fluctuates

What is the sign of Delta S when ammonia gas at 2 atm becomes ammonia gas at 1 atm?

• Zero

• Negative

• Undefined

• Positive

What is the sign of Delta S for the reaction N2O4 (g) -> 2 NO2 (g)?

• Positive

• Undefined

• Negative

• Zero

What happens to entropy when water vapor condenses at 100 degrees Celsius?

• Entropy increases

• Entropy decreases

• Entropy fluctuates

• Entropy remains the same

What is the effect on entropy when the volume of a gas is doubled?

• Entropy fluctuates

• Entropy increases

• Entropy remains the same

• Entropy decreases