NYB Chapitre 4
Quiz
•
Chemistry
•
12th Grade
•
Practice Problem
•
Hard
Joanick Bourret
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7 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qualifiez le pH d'une solution constituée de Mg(NO2)2.
Acide
Basique
Neutre
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Quel composé serait le plus efficace augmenter la solubilité du Cu(OH)2?
Mg(OH)2
Cu(NO3)2
HNO3
HNO2
3.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Quelle solution possède le plus haut pourcentage d'ionisation? (pKa du HF = 3,20 et pKa du CH3COOH = 4,76)
HF 0,01 M
HF 0,30 M
CH3COOH 0,01 M
CH3COOH 0,30 M
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qualifiez le pH d'une solution constituée de CH3CH2NH3ClO4.
Acide
Basique
Neutre
5.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Lequel des énoncés n'est pas un couple acide-base?
NH3 / NH4+
H3O+ / OH-
H2PO4- / HPO42-
HS- / H2S
NH3 / NH2-
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Lequel de ces ions est basique?
Cl-
NO3-
ClO4-
HSO4-
SO42-
7.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
En chimie organique, la formation d'un énolate à partir d'une cétone peut se faire en milieu acide ou bien basique. Selon cette équation chimique, le LDA a-t-il un comportement de base ou d'acide?
Acide
Base
Ion spectateur
Le cours d'organique me fait déjà peur.
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