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Chemistry, 02.01.2021 16:00 itsseand23

A 11 Vérifier un ordre de réaction (2)
Exploiter un graphique.
À 25 °C, on étudie la
Concentration en As (III)
réaction de l'arsenic (III)
0,25 (mol. L-1)
avec le peroxyde d'hy- 0,20
drogène en large excès. .
0,15
On trace l'évolution
temporelle de la concen- 0,10
B
tration en arsenic (III) de
0,05
deux solutions A et B de
concentrations initiales 0
10 20 30 40 50
différentes en arsenic (III).
t(min)
1. Déterminer les
temps de demi-réaction.
2. Vérifier
que
la réaction est d'ordre 1 par rapport à
l'arsenic (III).

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Answers: 1

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A 11 Vérifier un ordre de réaction (2)
Exploiter un graphique.
À 25 °C, on étudie la
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