Posted by jen on Saturday, April 2, 2011 at 5:12pm.
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.
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
why is the hydrous copper sulfate heated to constant weight?
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