Experiment of specific latent heat of fusion Amy and Ken
Diagram V A ice
Steps <ul><li>Set up circu i t as shown and record the reading on voltmeter and ammeter </li></ul><ul><li>Weigh the beaker...
Data Final mass/kg Initial mass/kg 0 Initial temperature/ C Time taken/s C urrent/A V oltage/V
Calculation <ul><li>Q=VIt  </li></ul><ul><li>Q=L(m final -m inital  ) </li></ul><ul><li>L=VIt/(m final -m inital ) </li></ul>
Safety measures <ul><li>There is no major safety concern because we are using ice which does not hurt us  </li></ul><ul><l...
Random errors <ul><li>The heat may be absorbed by the surrounding </li></ul><ul><li>Some ice may melt during weighing  </l...
Suggest improvements <ul><li>Use a  calorimeter  </li></ul><ul><li>Dry the ice before weighing </li></ul>
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A2/EXPT/THER/KEN/AMY

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Our experiment to determine Specific latent heat of fusion of ice



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A2/EXPT/THER/KEN/AMY

  1. 1. Experiment of specific latent heat of fusion Amy and Ken
  2. 2. Diagram V A ice
  3. 3. Steps <ul><li>Set up circu i t as shown and record the reading on voltmeter and ammeter </li></ul><ul><li>Weigh the beaker </li></ul><ul><li>Weigh the beaker and ice </li></ul><ul><li>Assume the temperature of ice is 0 O C </li></ul><ul><li>Heat the ice until melting partially and record time used </li></ul><ul><li>Reweigh ice left </li></ul>
  4. 4. Data Final mass/kg Initial mass/kg 0 Initial temperature/ C Time taken/s C urrent/A V oltage/V
  5. 5. Calculation <ul><li>Q=VIt </li></ul><ul><li>Q=L(m final -m inital ) </li></ul><ul><li>L=VIt/(m final -m inital ) </li></ul>
  6. 6. Safety measures <ul><li>There is no major safety concern because we are using ice which does not hurt us </li></ul><ul><li>T he electric current is small(3 volt) </li></ul><ul><li>Dropping the glass beaker is a rare case </li></ul>
  7. 7. Random errors <ul><li>The heat may be absorbed by the surrounding </li></ul><ul><li>Some ice may melt during weighing </li></ul>
  8. 8. Suggest improvements <ul><li>Use a calorimeter </li></ul><ul><li>Dry the ice before weighing </li></ul>

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