Repaso para examen parcial 4to bimestre química
Quiz
•
Chemistry
•
3rd Grade
•
Medium
Antonio Vargas
Used 75+ times
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36 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Es la definición de pH
Es el grado de ácidez o basicidad de una sustancia
Es la cantidad de ácido que tiene una sustancia
Es la cantidad de base que tiene una sustancia
Quiere decir pura histeria
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Por definición el pH se puede calcular con la siguiente ecuación
pH = - ln [H3O+]
pH = - log [H3O+]
pH = - log [OH-]
pH = - ln [OH-]
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
La siguiente fórmula está correcta?
pH + pOH = 16
Falso
Verdadero
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Si se tiene la siguiente concentración Molar = 3.1 x 10 -5 .
Sería el pH correcto de la substancia
pH = 6.7
pH = 4.5
pH = 7
pH = 9.0
5.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Si se tiene la siguiente concentración Molar = 8.2 x 10 -10 .
Sería el pH correcto de la substancia
pH = 6.7
pH = 4.5
pH = 7
pH = 9.0
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Si se tiene un pH = 2.16 ; la concentración molar correcta sería
6.9 x10 -3 M
1 x 10 -7 M
3.1 x 10 -5 M
5.9 x 10 -4 M
7.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
Determina el pH Y EL POH, de una sustancia que se prepara con
15 g de ácido clorhídrico (HCl) si se tiene un litro de solución. Si se sabe que el PA del H = 1g/mol y el PA del Cl = 35 g/mol
pH = 13
y
pOH = 1
pH = 1
y
pOH = 13
pH = 13.6
y
pOH = 0.4
pH = 0.4
y
pOH 13.6
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