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vera_ewing

  • one year ago

Chem

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  1. vera_ewing
    • one year ago
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    @taramgrant0543664

  2. vera_ewing
    • one year ago
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    @JoannaBlackwelder

  3. taramgrant0543664
    • one year ago
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    I know at stp the most ideal would be O2 and the C2H4 but I'm not for sure when pressure is high

  4. vera_ewing
    • one year ago
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    Would the answer be D. C?

  5. JoannaBlackwelder
    • one year ago
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    Have you studies van der waals equation and constants?

  6. vera_ewing
    • one year ago
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    Yeah a little bit.

  7. JoannaBlackwelder
    • one year ago
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    Do you see a trend in the constants of these substances?

  8. vera_ewing
    • one year ago
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    Yes.

  9. JoannaBlackwelder
    • one year ago
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    What trend do you see and what do you think it means?

  10. vera_ewing
    • one year ago
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    The bonds are decreasing from A to B? So I think that D. C would have ideal behavior at high pressures.

  11. JoannaBlackwelder
    • one year ago
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    What do you mean that the bonds are decreasing?

  12. vera_ewing
    • one year ago
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    A has more bonds than B, C, and D.

  13. JoannaBlackwelder
    • one year ago
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    That is true. Are you saying that oxygen gas will be most ideal at high pressures?

  14. vera_ewing
    • one year ago
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    Well I think Ne would have ideal behavior at high pressures. Or O-O. Am I correct?

  15. JoannaBlackwelder
    • one year ago
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    Yes, I get one of those. Do you have the van der waals constants for each?

  16. vera_ewing
    • one year ago
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    No. But I think it's O-O, not Ne.

  17. JoannaBlackwelder
    • one year ago
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    http://chemed.chem.purdue.edu/genchem/topicreview/bp/ch4/deviation5.html Why do you think it is O-O?

  18. vera_ewing
    • one year ago
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    I think because it has one bond...

  19. JoannaBlackwelder
    • one year ago
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    Why does that make it more ideal at high pressures do you think?

  20. vera_ewing
    • one year ago
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    Maybe because the one bond makes it more stable and it's between O and O?

  21. JoannaBlackwelder
    • one year ago
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    Hm, let's look at the constants for O2 and Ne and see if we can draw any conclusions.

  22. JoannaBlackwelder
    • one year ago
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    What values of constants do you think would make the van der waals equation simplify down to the ideal gas law?

  23. vera_ewing
    • one year ago
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    I'm not really sure...

  24. JoannaBlackwelder
    • one year ago
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    If the an^2/V^2 term went to 0, what do you think would happen to van der waals?

  25. vera_ewing
    • one year ago
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    I'm not sure. Can you please explain?

  26. JoannaBlackwelder
    • one year ago
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    If that term went to zero, then van der waals would simplify to|dw:1438902988176:dw|

  27. vera_ewing
    • one year ago
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    Okay

  28. JoannaBlackwelder
    • one year ago
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    And what if the nb term went to 0?

  29. vera_ewing
    • one year ago
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    Um idk... /:

  30. JoannaBlackwelder
    • one year ago
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    Take a guess.|dw:1438903094158:dw|

  31. vera_ewing
    • one year ago
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    Just RT?

  32. JoannaBlackwelder
    • one year ago
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    No, only the nb term would go to zero.|dw:1438903183657:dw|

  33. vera_ewing
    • one year ago
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    Ohh okay! So it's Ne?

  34. JoannaBlackwelder
    • one year ago
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    Right, because the van der waals constants are closer to 0.

  35. vera_ewing
    • one year ago
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    Ah, okay! Thank you so much for explaining it!

  36. JoannaBlackwelder
    • one year ago
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    You're welcome :-)

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