Posted by **jen** on Saturday, April 2, 2011 at 5:12pm.

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

Thankyou very much

- chemistry -
**DrBob222**, Saturday, April 2, 2011 at 5:47pm
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.

- chemistry -
**bobpursley**, Saturday, April 2, 2011 at 5:51pm
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

- chemistry -
**nada **, Tuesday, October 2, 2012 at 12:26pm
why is the hydrous copper sulfate heated to constant weight?

## Answer this Question

## Related Questions

- Calculus please help! - Suppose you have a set of data points for x and t. Using...
- Language art - Just this one question please . 1.According to the MLA style, how...
- year 8 re-Re teachers - i posted this question before but can`t see it on the ...
- chemistry - how do I plot absorbance vs concentration and transmittance %T vs ...
- Please help with Chemistry????? - A standard solution with a FeSCN2+ ...
- can someone please help me? - simplify the following expressions involving ...
- Chem - I'm confused with Determining the concentration of a soution: beer's law ...
- chemistry - Q: Calculate the unknown molar concentration of CH3NH2 in MeOH ...
- chemistry - Help with Beer's Law lab experiment question! So we were told to ...
- Math/ Physiology - Why do you draw a linear graph of absorbance versus ...

More Related Questions