Mejoramiento Química II Periodo
Quiz
•
Chemistry
•
11th Grade
•
Medium
Jorge Acosta
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16 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
2.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Se define como pH
La escala que se usa para medir la acidez de las sustancias
Los "horse power" de potencia que tiene una máquina.
Son las siglas de Hewlett Pakard
La escala que se usa para medir la acidez y la alcalinidad de una sustancia.
3.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
La fórmula para calcular el pH es:
pH = - log [OH-]
pH = log [OH-]
pH = - log [H+]
pH = log [H+]
4.
MULTIPLE CHOICE QUESTION
3 mins • 5 pts
Si una solución tiene una [OH+] de 4.5 x 10-7 M, ¿qué tipo de solución es?
Acida
Alcalina
Neutra
5.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Si en una muestra la [OH-] es igual 1 x 10-8 entonces el pH es igual a:
10
4
6
8
6.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Teniendo en cuenta la imagen:
El café es más ácido que el jugo de limón.
El café es más ácido que las lluvias ácidas.
El café es neutro
El café es más básico que el agua de mar.
7.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
El pH de un vino resultó 3,49.¿Cuál es la concentración de H+?
10,51
3,49x10-3 M
3,2x10-4 M
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