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Quiz: Preguntas de pH

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Quiz: Preguntas de pH

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Conoce el pH y su impacto

Created by

Valentino Ponzio
Valentino Ponzio
Argentina

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Quiz: Preguntas de pH
 

Quiz: Preguntas de pHOnline version

Conoce el pH y su impacto

by Valentino Ponzio
1

¿Qué mide exactamente el pH en una disolución?

2

¿Qué valor representa la neutralidad en la escala de pH?

3

Si una solución tiene pH menor a 7, ¿qué naturaleza tiene?

4

¿Qué palabra describe la solución con pH igual a 7?

5

¿Qué instrumento se usa para medir el pH?

6

Un pH de 4 indica una solución...

7

¿Qué rango de pH es típico en la sangre humana?

8

¿Qué es una solución tampón (buffer)?

9

Si se agrega una base fuerte a una solución de pH 4, ¿qué ocurre?

10

Verdadero o falso: pH y concentración de H+ están inversamente relacionados.

Explicación

El pH indica cuántos iones H+ o OH- hay y si la solución es ácida, neutra o básica.

Un pH de 7 indica neutralidad, por encima es básico y por debajo ácido.

Los pH bajos (<7) corresponden a soluciones ácidas.

Un pH de 7 es considerado neutro en agua a 25°C.

El pH-metro mide el nivel de acidez o basicidad de una muestra.

Valores por debajo de 7 indican acidez.

La sangre sana es ligeramente alcalina: ~7.35–7.45.

Los tampones neutralizan pequeñas cantidades de ácido o base para mantener estable el pH.

Las bases elevan el pH, reduciendo la acidez, acercándose a neutro o más.

Más H+ significa menor pH (más ácido) y viceversa.

 
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