
Equilibrio Ácido - Base
Authored by Heilen Arce
Science, Chemistry
University
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12 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
La base conjugada del HPO42- es:
H3PO4
H2PO4-
PO43-
OH-
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Señala el ácido más débil:
HI
HBr
HCl
HF
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
La especie que actúa como ácido de Lewis en la siguiente reacción es:
NH3
Ag+
[Ag(NH3)2]+
H2O
4.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Al preparar una disolución de HClO 0,005 mol/L, el pH resultante será de:
Ka HClO = 3,0 x 10–8
4,91
9,09
2,30
11,7
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
El pH de una disolución de trimetilamina ((CH3)3N) 0,200 mol/l a 25°C tiene un valor de:
Kb = 6,31x10-5
2,45
5,64
8,36
11,55
6.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Al preparar una disolución de HClO 0,005 mol/L, el porcentaje de ionización será de:
Ka HClO = 3,0 x 10–8
0,0024 %
98 %
2,4 %
0,24 %
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Una disolución acuosa de metilamina (CH3NH2) 0,150 mol/L a 25°C posee un pH = 11,89. ¿Cuál es el valor de su Kb?
4,17x10-4
1,11x10-23
7,70x10-3
1,29x10-12
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