Given the accompanying phase diagram,under what conditions will liquid be found in equilibrium with either solid or gas?
A) Anywhere along curve AB
B) Anywhere along curve AC
C) Anywhere along curve AD
D) Anywhere along curve AB and AC
E) Anywhere along curve AB and AD

Question

Given the accompanying phase diagram,under what conditions will liquid be found in equilibrium with either solid or gas? 
A) Anywhere along curve AB 
B) Anywhere along curve AC 
C) Anywhere along curve AD 
D) Anywhere along curve AB and AC 
E) Anywhere along curve AB and AD

Quizplus · Accepted Answer

Liquid can be found in equilibrium with both solid and gas along curves AB and AC, where they represent the melting and boiling points respectively. Curve AD represents the sublimation point, so liquid cannot be found in equilibrium with solid along this curve. Therefore, the best choice is D.

Given the Accompanying Phase Diagram,under What Conditions Will Liquid Be