TSNF Unit 9 Test - Thermodynamic Applications

Thermodynamically favorable (spontaneous) reactions have a what sign for ΔG?

• Positive

• Negative

• Neutral

• Equilibrium

Reactions with what signs for ΔH and ΔS are ALWAYS thermodynamically favorable?

• - S, -H

• +S, -H

• +S, +H

• -S, -H

If a reaction increases the # of moles of gas, then the sign for ΔS is what?

• Positive

• Negative

• Neutral

• Equilibrium

If ΔG is (+), then Keq is greater than or less than 1?

• Greater

• Less

At equilibrium, what is the value of ΔG?

• One

• Less than One

• Greater than One

• Zero

If you use the value of 8.314 for R in the equation ΔGo = −RT lnK, then what are the units for ΔG?

• KJ

• J

Electrons in a battery flow in which direction?

• Cathode to annode

• Annode to Annode

• Annode to Cathode

• Cathode to Cathode

In the salt bridge, which direction do the cations ions flow?

• Cathode

• Anode

While a battery is discharged, the mass of the anode ?

• Increases

• Decreases

• Remains the same

If you reverse AND double a redox reaction, what happens to the magnitude AND sign of Eocell  ?

• Increases

• Decreases

• Does not change