
SM11 Kimya
Authored by Nur Eser
Chemistry
11th Grade
Used 4+ times

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10 questions
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1.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Concernant l'eau pure;
Lesquelles des affirmations sont correctes ?
I. pH = pOH = 7 à 25°C.
II. A 25°C, Keau = 1.10^-14
III. Équation d'ionisation ; C'est 2H2O(s) <--> H3O+(dans l'eau) + OH-(dans l'eau).
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Si la molarité des ions OH- dans une solution dans des conditions standard est de 1.10-9, quelle est la valeur du pH de cette solution dans les mêmes conditions ?
4
5
6
9
1
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
40 mL de solution sont préparés en dissolvant 0,0002 mol d'acide H2SO4 à 25°C. Quelle est la valeur du pH de la solution ?
0
1
2
3
4
4.
MULTIPLE SELECT QUESTION
1 min • 1 pt
Étant donné que 0,1% d'une base faible avec une concentration initiale de 0,1 M est ionisée aux conditions ambiantes, pour cette solution; Lesquelles des affirmations sont correctes ?
I. pOH = 4.
II.Ko = 2.10-7
. III. [OH-] < [H+].
5.
MULTIPLE SELECT QUESTION
1 min • 1 pt
Pour le sel NH4NO3 ; Lesquelles sont fausses?
Le cation est hydrolysé.
Son anion est hydrolysé
crée une solution neutre.
6.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Combien de sels donnés subissent une hydrolyse?
NH4Cl
NaF
CH3COOK
LİCN
Na2SO4
1
2
3
4
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Quelle est la solubilité du solide AgCl, qui a une solubilité de 1,6.10-8 M dans une solution de NaCl 0,1 M, dans de l'eau pure ?
A) 1,6.10-9
B)1,6.10-10
C) 1,6.10-5
D) 4.10-5
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