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Beer-Lambert Law question

  1. Feb 22, 2007 #1
    Does anyone know the molar absorption coefficient for acetonitrile? I need to know what wavelength the coefficient is at of course as well. Hopefully I can find one in the visible spectrum. My department does not have an ultra violet spectrophotometer.

    I guess I should pick easier thermodynamic experiments :rolleyes:
     
  2. jcsd
  3. Feb 22, 2007 #2

    chemisttree

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    Acentonitrile does not have an appreciable visible absorbance.

    Look in a Fisher catalog for the Optima grade. You will see that it has no appreciable absorbance down to 200 nm (deep in the UV!).

    Absorbance (200nm) <= 0.07
     
  4. Feb 23, 2007 #3
    thank you. I guess I will have to pick something else. Could anyone suggest a liquid immiscible in water that absorbs in the vis spectrum?
     
  5. Feb 23, 2007 #4

    chemisttree

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    What is the solute and what, in general terms, are you trying to investigate?

    BTW, acetonitrile is completely miscible in water. Good thing it didn't work out, yes?
     
  6. Feb 24, 2007 #5
    i would suspect that acetonitrile is uv active
     
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