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Medhd

By Medhd
in UE1 - Chimie

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Go to solution Solved by Fandecellule,

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Medhd tic tat

Medhd

Posted
Posted

Bonjour,

Je ne comprends pas pourquoi l’unité de ΔrG est en kJ.mol-1 dans 197 kJ.mol-1 et pas J.mol-1.

Voici le calcul en question:

ΔrG = ΔrH - T.ΔrS = -283000 (J.mol-1)- 1 000 x (-86) = -283 000(J.mol-1)+ 86 000(J.mol-1/K= - 197 kJ.mol-1 < 0 donc

c’est une réaction exergonique.

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