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Latent Heat of Fusion/Vaporization

by pcs106
Tags: fusion, heat, temperature, vaporization
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pcs106
#1
Mar28-10, 07:19 PM
P: 2
1. The problem statement, all variables and given/known data

Heat is added to a 1.0-kg solid sample of a material at 200 C. The figure shows the temperature of the material as a function of the heat added.


What is the latent heat of fusion of this material?
What is the latent heat of vaporization of this material?

2. Relevant equations

I know that Q = mL equation applies to this concept, but not sure how to go about it

3. The attempt at a solution

Q = 100kcal?
m = 1
L=Q/m = 100/1 = 100 for fusion?
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rock.freak667
#2
Mar28-10, 08:21 PM
HW Helper
P: 6,202
The latent heats occur during a phase change, so when the temperatures are constant.
pcs106
#3
Mar28-10, 08:47 PM
P: 2
Quote Quote by rock.freak667 View Post
The latent heats occur during a phase change, so when the temperatures are constant.
so the latent heat of fusion is 100 kcal? or at the beginning of the constant: 50kcal?

rock.freak667
#4
Mar28-10, 08:49 PM
HW Helper
P: 6,202
Latent Heat of Fusion/Vaporization

Quote Quote by pcs106 View Post
so the latent heat of fusion is 100 kcal? or at the beginning of the constant: 50kcal?
yes it looks like the fusion is 100 kcal, the vaporization would be in the other region.


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