Heating and Cooling Curve Review

What is the melting point of this substance?

• 30^oC

• 55^oC

• 90^oC

• 120^oC

What is the boiling point of this substance?

• 32^oC

• 54^oC

• 62^oC

• 100^oC

During which interval is the substance completely in the liquid phase?

• AB

• BC

• CD

• DE

Solid and liquid phases can exist in equilibrium between points

• E and F

• B and C

• C and D

• D and E

Which segments of the cooling curve represent the fixed points on a thermometer?

• AB and CD

• BC and DE

• AB and EF

• CD and EF

At which temperature does a phase change occur for this substance?

• 0^oC

• 40^oC

• 80^oC

• 140^oC

Between which times could the heat of fusion be determined?

• A and B

• B and C

• C and D

• E and F

What is the total length of time that the solid phase existed with the liquid phase?

• 6 min

• 10 min

• 8 min

• 4 min

What is the freezing point of paradichlorobenzene?

• 42^oC

• 53^oC

• 58^oC

• 65^oC

What is the freezing point of the substance?

• 70^oC

• 59^oC

• 53^oC

• 48^oC