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Latent Heat of Fusion/Vaporization

  • Thread starter pcs106
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  • #1
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Homework Statement



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.
http://edugen.wiley.com/edugen/courses/crs1445/art/qb/qu2/c12/r3-1.jpg

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

Homework Equations



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

The Attempt at a Solution



Q = 100kcal?
m = 1
L=Q/m = 100/1 = 100 for fusion?
 

Answers and Replies

  • #2
rock.freak667
Homework Helper
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The latent heats occur during a phase change, so when the temperatures are constant.
 
  • #3
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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?
 
  • #4
rock.freak667
Homework Helper
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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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