Question 1
The signs of Δ
G, Δ
H, and Δ
S at 25°C are shown below for three reactions.
Which reaction could go in the reverse direction at high temperature?
◦ I
◦ II
◦ III
◦ I and II
Question 2
For the evaporation of water during perspiration on a hot, dry day,
◦ Δ
H is positive and
TΔ
S = Δ
H.
◦ Δ
H is negative and
TΔ
S is positive.
◦ Δ
H is positive and
TΔ
S < Δ
H.
◦ Δ
H is positive and
TΔ
S > Δ
H.