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Heat of solution

  • Thread starter jessica.so
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  • #1
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Homework Statement


What is the heat of solution of calcium chloride (CaCl2) and sodium bicarbonate (NaHCO3)?


Homework Equations





The Attempt at a Solution


Heat of solution is more formally known as the enthalpy of fusion. I tried googling this but I am not sure if this is the correct answer...
Heat of solution of CaCl2: -81.3 kJ/mol
Heat of solution of NaHCO3: +33 kJ/mol

Any help is appreciated! Any websites with such information would be awesome!
 

Answers and Replies

  • #2
Borek
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Heat of solution is more formally known as the enthalpy of fusion.
No, dissolution and fusion are two separate processes. Heat of solution is heat that evolves during dissolution of a substance (usually in water). Heat of fusion is amount of heat required to melt the substance.
 
  • #3
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Okay. Is the heat of solution a value that I need to calculate that has a formula? Or should I be able to find a list that lists all of them?
 
  • #4
Borek
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Basically these are determined experimentally. If some other data is known it can be possible to calculate heat of dissolution from the Hess law, but the same can be told about every other process.
 

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