Question

is shown in the graph. what is its boiling point? 80 c 100 c 60 c 20 c

Explanation:

Step1: Recall the concept of boiling point

The boiling point is the temperature at which a substance changes from liquid to gas. On a temperature - heat added graph, it is represented by the horizontal line (plateau) during the liquid - gas phase change.

Step2: Identify the plateau for boiling

Looking at the graph, the horizontal line segment DE is the phase change from liquid to gas. The temperature corresponding to this segment is \(60^{\circ}C\).

Answer:

60 C