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TD Optique dimensions


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Posted

Salut,

Je comprends pas trop les unités de l'absorptivité molaire. Comment concentration x densité fait mol.L-1.m. et ensuite N-1.L3.L-1 ?

Je sais pas trop d'où sort le L3 ?

 

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Posted

coucouuu, attention c.d = concentration x distance (et pas densité)

avec concentration = mol.L-1 = mol.dm-3 = [N.L-3]  et distance = m = [L]

du coup tu retrouves bien 1/N.L-3.L = N-1.L3.L-1 = N-1.L2 soit des m2.mol-1

c'est plus clair? 😉 

 

Posted
il y a 3 minutes, lola_svry a dit :

concentration = mol.L-1 = mol.dm-3 = [N.L-3]

Ahhh oui je vois ! C'est de suite plus clair, merci !

 

Bon courage et bonne semaine !

santa claus thank you GIF by Macy's

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