matiere.py

Created by cghi72

Created on October 13, 2021

615 Bytes

dilution solu aqueuse = ajout d'eau à cette solu
pour diminuer la concentration en soluté

nm = nf

dosage par étalonage consiste en déterminer
la concentration en espèce chimique dans une solution 
en comparant une grandeure 
physique caractéristique de cette solution
à celle de solutions étalons

lumière blanche dans solution coloré
certaines bandes de radiations sont
absobées et disparaissent du spectre 

capacité solu étalon à absorber une partie de la lumière
qui la traverse est absorbance A
sans uni par spectrophotomètre 

e: coef d'absorption molaire L.mol-1.cm-1
L en cm

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