
Notion de pH
Authored by Julien Liberatore
Chemistry
KG
Used 25+ times

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12 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Laquelle de ces boissons est la plus acide ?
Un vin de pH = 4,5
Du lait de pH = 6,5
Un soda de pH = 2,5
Un thé de pH = 5,0
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
De quel domaine d’application du pH n’est-il pas question dans la vidéo ?
Le pH des sols en agriculture
le pH des océans
le pH du lait
le pH des eaux de piscines
le pH de la salive ou du suc gastrique
3.
FILL IN THE BLANK QUESTION
3 mins • 1 pt
Quels ions contient l’eau pure et sont responsables de sa très faible conductivité ? (écrivez vos réponses sans mettre d'exposant ou d'indice et espacées par un "et")
4.
FILL IN THE BLANK QUESTION
1 min • 1 pt
Donnez le nom de la réaction dont l'équation est :
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Quelle est l’expression du produit ionique de l’eau ainsi que sa valeur (à 25 °C).
KW = [H3O+] . [OH-] = 10-7
KW = [H3O+] . [OH-] = 7
KW = [H3O+] + [OH-] = 10-14
KW = [H3O+] + [OH-] = 10-7
KW = [H3O+] . [OH-] = 10-14
6.
FILL IN THE BLANK QUESTION
3 mins • 1 pt
L’échelle de pH n’est pas une échelle linéaire mais une échelle ...
(attention à l'orthographe, tapez sur Internet si vous n'êtes pas sûr !)
7.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Soient les 4 solutions aqueuses suivantes dont voici quelques infos :
Solution 1 : [H3O+] = 10-1 mol/l et [OH-] = 10-13 mol/l
Solution 2 : [H3O+] = 10-7 mol/l et [OH-] = 10-7 mol/l
Solution 3 : [H3O+] = 10-12 mol/l et [OH-] = 10-2 mol/l
Solution 4 : [H3O+] = 10-5 mol/l et [OH-] = 10-9 mol/l
LAQUELLE EST LA PLUS ACIDE ?
Solution 1
Solution 2
Solution 3
Solution 4
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