(a)What do parts AB, BC, CD and DE represent?
(b) What is the melting point of the substance?
(c) What is the boiling point of the substance?
Solution:
(a) The AB section depicts the solid’s temperature rise from 0 degrees C to to 10 degrees C.
At 10 degrees C, the BC component begins to melt.
The temperature of the liquid rises from 10 degrees C to 30 degrees C in the CD section.
The boiling at 30 degrees C is shown in the DE portion.
(b) The substance’s melting point is 10 degrees C.
(c) The substance’s boiling point is 30 degrees C.