
Dureté de l'eau minérale
Authored by nathalie doyen
Chemistry
KG
Used 41+ times

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20 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
L'Ion calcium Ca2+ est un atome qui a:
Perdu deux électrons
gagné deux électrons
perdu deux neutrons
perdu deux protons
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Si le TH d'une eau vaut 8. Est elle:
douce
dure
moyennement dure
trés dure
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
le TH s'exprime en :
degrés français
degrés Celsius
Fahrenheit
4.
MULTIPLE SELECT QUESTION
1 min • 1 pt
La dureté de l'eau est due à la présence d'Ions:
calcium
magnesium
silicium
sulfate
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Une solution aqueuse dont le pH est égal à 8 est une solution:
acide
neutre
basique
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Le pH se calcule à l'aide de la formule:
pH= log[H3O+]
pH= -log[H3O+]
pH= -In [H3O+]
7.
MULTIPLE SELECT QUESTION
1 min • 1 pt
La dureté d'une eau se mesure à l'aide du :
pH
TH
Titre hydrotimétrique
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