Bromine exists in equilibrium between its liquid and gaseous forms according to the equation
Br2(l)⇌Br2(g)ΔH∘=+31kJ
A sealed container holds the mixture at equilibrium at 300 K. The container is then warmed to 320 K while the volume remains constant. What happens to the equilibrium amount of liquid bromine present?
a) It first decreases and then returns to its original value.
b) It remains the same.
c) It decreases.
d) It increases.