can someone please explain to me in dummy language this question... Why is the graph of transmittance versus concentration not linear?...

3 answers

1. I suppose the easiest way to look at that absorbance = A = abc and that is a linear graph. But A = log (1/T) so the graph of T versus concn can't be linear because it is a log term.

   Answer ID
   524346

   Created
   April 2, 2011 9:47pm UTC

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2. In dummy language, it is not linear because it is logarithmic by definition.
   
   absorbance=constant*concentration=kc
   which is linear with concentration.
   
   but absorbance=10*log P/Po=
   =10log 1/Transmittance
   because transmittance=P/Po
   
   which leads to T=e^{-k*concentration}
   Thus, it is not linear.
   
   http://teaching.shu.ac.uk/hwb/chemistry/tutorials/molspec/beers1.htm

   Answer ID
   524349

   Created
   April 2, 2011 9:51pm UTC

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3. why is the hydrous copper sulfate heated to constant weight?

   Answer ID
   780909

   Created
   October 2, 2012 4:26pm UTC

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