Question 20
Change of State and VapoursThe specific latent heat of fusion of lead is the amount of heat required to
- A.melt lead at its melting point
- B.heat a unit mass of lead through 1°C
- C.change the state of a unit mass of lead at its melting point
- D.change the state of a unit mass of lead at its boiling point.
Show the answer and explanation
Answer: C (change the state of a unit mass of lead at its melting point)
Explanation
Specific latent heat of fusion is the heat needed to change unit mass from solid to liquid at the melting point, with no temperature change.