Question

short answer
q 13. which letter in the phase diagram below best represents (i) sublimation, (ii) the triple point?
pressure
temperature

Explanation:

Step1: Recall sublimation definition

Sublimation is the transition from solid - to - gas without passing through the liquid phase. On a phase diagram, it occurs below the triple - point pressure. Movement from a solid region to a gas region below the triple - point pressure is along the line G.

Step2: Recall triple - point definition

The triple - point is the point where the solid, liquid, and gas phases co - exist in equilibrium. On the phase diagram, it is the intersection point of the solid - liquid, liquid - gas, and solid - gas phase boundaries, which is point F.

Answer:

(i) G
(ii) F