9.5-9.6 Free Energy of Equilibrium and Dissolution

Multiple Choice

Predict the sign of ΔH for the reaction

• Positive

• Negative

Open Ended

Why is ΔH positive?

Multiple Choice

Predict the sign of ΔS for the reaction (all reactants and products are gases)

• Positive

• Negative

Open Ended

Why is ΔS positive?

Multiple Choice

One of these diagrams best represents the relationship between ΔG and Temp for the reaction given in part (a). Assume that ΔH and ΔS are independent of temperature

Remember ΔG = ΔH - TΔS

Open Ended

A reaction mixture of N₂O₄ and NO₂ is at equilibrium. Heat is added to the mixture wile it is maintained at constant pressure. Explain why the concentration of N₂O₄ decreases.

Open Ended

The value of K_eq at 25 C is 5.0x10^-3. will the value of K_eq at 100 C be greater than, less than, or equal to this value?