Asked by jen
can someone please explain to me in dummy language this question... Why is the graph of transmittance versus concentration not linear?...
Thankyou very much
Thankyou very much
Answers
Answered by
DrBob222
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.
Answered by
bobpursley
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<sup>-k*concentration</sup>
Thus, it is not linear.
http://teaching.shu.ac.uk/hwb/chemistry/tutorials/molspec/beers1.htm
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<sup>-k*concentration</sup>
Thus, it is not linear.
http://teaching.shu.ac.uk/hwb/chemistry/tutorials/molspec/beers1.htm
Answered by
nada
why is the hydrous copper sulfate heated to constant weight?
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