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LATENT HEAT OF FUSION OF ICE

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Introduction

Date:11\09\2008  Student Number:20070211  Name: Shao,WeiWen  Partner:Liu,Yi  Time:1h

LATENT HEAT OF FUSION OF ICE

AIM:

To determine the latent heat of fusion of ice and compare the value obtained with the accepted value.

BACKGROUND:

The amount of heat needed to raise the temperature of a mass of one kilogram of a substance by one Kelvin is called the specific heat capacity, c ,of the material. To raise the temperature of a mass m by △T degrees, the amount of heat required therefore, Q=mc△T.

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Middle

METHOD:

  1. Prepare the equipment.
  2. Measure the mass of container, and put little water into the container.
  3. Put the boiling water into the container when it reach the half volume of container.
  4. measure the initial temperature of water, and record data.
  5. Measure the container with water, then calculate the mass of water.
  6. Put the ice into the water.
  7. After the disappear of the ice, measure the mass of the caontainer and calculate the mass of ice.
  8. Measure the final temperature of water and record data.
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Conclusion

s="c1">  8.9

   58

46

DATA ANALYSIS:

The specific heat capacity of water: 4.18E3 Jkg-1K-1

The speaific heat capacity of ice: 2.1E3 Jkg-1K-1

CwMw(Tf-Ti)+CAlMAl(Tf-Ti)=MiLi+CwMiTf

     4.18×87.8*(58-46)+0.91*29.3*(58-46)= 8.9*Li+4.18*8.9*46

                         Li≈338.5J/g

CONCLUSION:

Our conclusion of the latent heat of fusion of the ice is about 338.5J/g.

EVALUATION:

I think there are some heat transfer to air. And when we measure the initial temperature, the heat transferred during the time we waiting.

CONFERENCE:

<Physics for the IB diploma>

Fourth Edition

K.A. Tsokos

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