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Photon336

  • one year ago

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  1. Photon336
    • one year ago
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    Question 126. Which will have the largest heat of vaporization?

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  2. Photon336
    • one year ago
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    thought it was NaCl

  3. taramgrant0543664
    • one year ago
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    Well the heat of vaporization correlates with the melting points. At room temperature Cl2 is a gas and H2O and HCl are both liquids. NaCl is a solid at room temp so wouldn't it have the highest heat of vaporization

  4. Photon336
    • one year ago
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    oh. I see. so we take room temperature into account?

  5. Photon336
    • one year ago
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    I noticed I tried looking this up (heat of vaporization for NaCl & wikipedia lmao says it doest have a value)

  6. sweetburger
    • one year ago
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    i did the same thing XD

  7. sweetburger
    • one year ago
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    no value

  8. sweetburger
    • one year ago
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    http://www.pleasanton.k12.ca.us/fhsweb/morris/APchem/ch%2010/Practice%20test%20MC.pdf idk if im allowed to post links but this one has similar compounds and states that NaCl has the highest heat of vaporization look at question 6

  9. taramgrant0543664
    • one year ago
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    I'm coming up with nothing either for NaCl

  10. Photon336
    • one year ago
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    @sweetburger i saw that problem don't get why though... maybe because it's a solid?

  11. taramgrant0543664
    • one year ago
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    Well at room temp NaCl is a solid where all the others are liquids or gases

  12. Photon336
    • one year ago
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    but it's heat of vaporization (l) --> (g) not heat of fusion.. don't know why i'm kind of confused.

  13. sweetburger
    • one year ago
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    I dont see how it could not be NaCl. It has a very large molecular mass compared to the other compounds in question except for which Cl2 has a higher mass but NaCl is in a strong lattice and Cl2 just has weak disperson forces holding it together. All together I dont see how NaCl would not have the highest H of Vaporization.

  14. sweetburger
    • one year ago
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    not sure if that logic is completely sound^ but its my attempt to reason

  15. sweetburger
    • one year ago
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    yes its (l)--->(g) and if some of the compounds are already liquids or gases and NaCl is a solid then it would be much harder to turn NaCl into a gas than the other compounds

  16. sweetburger
    • one year ago
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    *at room temperature

  17. Photon336
    • one year ago
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    yeah your logic makes perfect sense man.. i just didn't understand why there was no value but both of you are right.

  18. Photon336
    • one year ago
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    It's NaCl for sure.

  19. Photon336
    • one year ago
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    ok I'm going to post another one

  20. Photon336
    • one year ago
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    @sweetburger that last point helped me out a lot, like NaCl is a solid so it would be harder to vaporize it.

  21. sweetburger
    • one year ago
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    alright glad it helped :)

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