
Exo pH 6AB 22 mars
Authored by chem ical
Chemistry
12th Grade
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10 questions
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1.
FILL IN THE BLANK QUESTION
1 min • 1 pt
Une solution d'hydroxyde de calcium, CaOH2, a un pOH de 4, quel est son pH?
2.
FILL IN THE BLANK QUESTION
1 min • 1 pt
Le Ka de l'acide chloreux est de 0,01, quel est son pKa?
3.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
L'ammoniaque est
NH3 (g)
NH4+ (aq)
NH3 (aq)
une base faible
4.
FILL IN THE BLANK QUESTION
1 min • 1 pt
Le pKb de l'ammoniac est 4,8, donc le pKa de son acide conjugué est
5.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Le symbole M est
celui de l'unité de la masse molaire
celui de la masse molaire
celui de la concentration molaire
celui de l'unité de la concentration molaire
6.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
L'acide nitrique est
HNO2
HNO3
L'acide conjugué de NO2-
Un acide fort
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Le pH d'une solution d'HNO3 à 0,10 mol/L sera .................................... que celui d'une solution d'HNO2 à 0,10 mol/L ?
plus petit
plus grand
identique
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