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Ácidos, sales y bases

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Ácidos, sales y bases

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Quiz de ácidos, sales y bases

Created by

Francisca Toribio
Francisca Toribio
Dominican Republic

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Ácidos, sales y bases
 

Ácidos, sales y basesOnline version

Quiz de ácidos, sales y bases

by Francisca Toribio
1

¿Qué mide el pH de una solución?

2

¿Cuál es la definición de un ácido según Arrhenius?

3

¿Cuál es la definición de una base según Arrhenius?

4

¿Qué resultado obtiene la reacción entre un ácido y una base?

5

¿Qué es una sal en química?

6

En una disolución ácida, ¿qué aumenta principalmente?

7

¿Qué afirma la relación pH y pOH en agua neutra a 25 °C?

8

¿Qué indica un pH igual a 7?

9

¿Qué es una base de Brønsted-Lowry?

10

¿Qué indica una solución con pH menor que 7?

Explicación

El pH refleja la concentración de H+ en solución; temperaturas o colores no lo determinan.

Los ácidos de Arrhenius liberan protones H+. OH- corresponde a las bases.

Las bases de Arrhenius liberan iones OH-. Los ácidos liberan H+.

La neutralización ácido-base genera una sal y agua.

Las sales se forman cuando un ácido y una base reaccionan. Contienen cationes y aniones.

Las soluciones ácidas tienen mayor concentración de iones H+.

En agua a 25 °C, la suma de pH y pOH es 14.

pH 7 es neutro a 25 °C.

Bronsted-Lowry define bases como sustancias que aceptan protones.

pH < 7 señala acidez; pH > 7 es básico y ~7 neutro.

 
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