A.8.6 Find the concentration of a solution via calibration curve (Beer--Lambert law) IB Chemistry

Simple:
1) Find the most absorbed wavelength in your sample using a spectrometer.
2) Accurately measure the colour of multiple concentrations of your sample.
3) Plot a graph of concentration against concentration -- tah dah you have a calibration curve based on the Beer-Lambert Law. Now you can find the unknown concentrations of other samples.

Tricky:
Absorbance = log Io/ I = elc where

Io= intensity of incoming light I=intensity of outgoing light e= constant for the substance
l =path length of light through the substance c=concentration of substance

It's in the data book!

Category:

Education

Tags:

• beer-lambert law
• absorbance
• concentration
• colorimeter
• IB Chemistry
• A.8.6

[MultiSachin333]

i bet that u are chinese

[richthornley]

@MultiSachin333 from England my friend

[steofearon1]

Crystal Clear Thanks :)

[morewater14]

Great vid, cleared this topic up for me very quickly, just when i was ready to give up, Thanks!!