
Titra+méca
Authored by Gilles R
Physics
12th Grade
Used 2+ times

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14 questions
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1.
FILL IN THE BLANK QUESTION
1 min • 1 pt
La réaction servant de support à un titrage doit être rapide, unique et
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Parmi les 4 graphes qui représentent l'évolution du pH de la solution titrée en fonction du volume de solution titrante ajoutée. Quel(s) graphe(s) correspondent au titrage d'une base ?
1 et 3
2 et 4
1
3
1 et 2
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
4.
MULTIPLE SELECT QUESTION
2 mins • 2 pts
La courbe ci-dessus retrace l'évolution du pH au cours d'un titrage. Lequel des indicateurs proposés est le plus indiqué pour identifier le point d'équivalence du titrage ? Quelle est la couleur de la solution à l'équivalence ?
le rouge de méthyle (zone de virage : 4,4 - 6,2)
le bleu de bromophénol (zone de virage : 1,2 - 2,8)
La phénolpthaléine
(zone de virage : 8,0 - 10,2)
Couleur orange
Couleur verte
5.
MULTIPLE CHOICE QUESTION
5 mins • 2 pts
6.
FILL IN THE BLANK QUESTION
3 mins • 2 pts
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Dans un référentiel galiléen, une voiture prend un virage circulaire a vitesse constante
Les forces se compensent
l'accélération est nulle
l'accélération est normale
l'accélération est tangentielle
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