
Ácidos y Bases
Quiz
•
Chemistry
•
University
•
Hard
Juan ARANGO
FREE Resource
21 questions
Show all answers
1.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
En la reacción: CH3COOH(ac) + NH2–(ac) ↔ CH3COO–(ac) + NH3(ac), un par ácido-base conjugado es:
NH2– y CH3COO–
CH3COOH y NH3
CH3COOH y CH3COO–
NH2– y NH3
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Identifique la base conjugada de HCO3–:
H2CO3
CO32–
OH–
CO2
CO
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Identifique la base conjugada de HPO42–:
H2O
H2PO4–
H3PO4
PO43–
OH–
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Identifique el ácido conjugado de HCO3–:
H2O
CO32–
H2CO3
CO2
H3O+
5.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
¿Qué de lo siguiente es cierto para los ácidos fuertes?
Todos los ácidos fuertes tienen átomos de H unidos a átomos de oxígeno electronegativos.
Los ácidos fuertes están 100% ionizados en agua.
La base conjugada de un ácido fuerte es también una base fuerte.
Los ácidos fuertes son ácidos con una concentración elevada.
Los ácidos fuertes producen soluciones con valores de pH mayores que las de los ácidos débiles.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
¿Cuál de las siguientes ecuaciones iónicas netas representa la reacción entre un ácido fuerte y una base débil?
H+ (ac) + OH− (ac) → H2O(ac)
H+ (ac) + CH3NH2(ac) → CH3NH3+(ac)
OH− (ac) + HCN(ac) → H2O(ac) + CN− (ac)
HCN(ac) + CH3NH2(ac) → CH3NH3+(ac) + CN− (ac)
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
La concentración de anión OH- en una solución 1.0 × 10-3 M de Ba(OH)2 es:
0.50 × 10-3 M
1.0 × 10-3 M
2.0 × 10-3 M
1.0 × 10-2 M
0.020 M
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