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Niquel por Gravimetría con DMG

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Niquel por Gravimetría con DMG

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Determinación de Ni mediante Ni-DMG

Created by

Zitlaly Guerrero
Zitlaly Guerrero
Mexico

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Niquel por Gravimetría con DMG
 

Niquel por Gravimetría con DMGOnline version

Determinación de Ni mediante Ni-DMG

by Zitlaly Guerrero
1

¿Qué compuesto forma el Ni al ser precipitado en este método?

2

¿En qué medio se forma principalmente el complejo Ni-DMG?

3

¿Qué tipo de analito se determina en esta práctica?

4

¿Qué propiedad se evalúa para cuantificar el analito en gravimetría?

5

¿Qué palabra describe el resultado de formar complejos poco solubles para la gravimetría?

6

¿Qué mide el factor gravimétrico?

7

¿Qué tipo de ligante es la dimetilglioxima en este método?

8

¿Qué paso es fundamental antes de pesar el precipitado en gravimetría?

9

¿Qué describe la introducción de la práctica?

10

En gravimetría, conocer la composición química del precipitado es esencial para realizar cálculos correctos

Explicación

La técnica precipita Ni como Ni-DMG (dimetilglioxima) en medio ligeramente alcalino.

El complejo se forma en un medio ligeramente alcalino.

El análisis es de níquel.

Se pesa la masa del precipitado para calcular el analito.

La gravimetría usa el precipitado poco soluble.

El factor gravimétrico relaciona analito y masa del precipitado.

La DMG forma quelatos con Ni.

Se lava para eliminar impurezas antes de pesar.

Se busca un precipitado con fórmula conocida para calcular el analito.

Permite calcular porcentaje analito a partir de la masa y relación estequiométrica.

 
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