sábado, 15 de mayo de 2010

INDICADORES ACIDO - BASE

Posted on 7:13 by Cranmaster

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RANGO DE pH: 7.4-9.0



INDICADOR: Metacresol Purple
CAMBIO DE COLOR: amarillo - púrpura
PREPARACION: 0.1 g in 26.2 mL 0.01 M NaOH + 223.8 mL water
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RANGO DE pH: 8.0-9.0



INDICADOR: 4,4’-Bis(4-amino-1-naphthylazo)-2,2’-stilbenedisulfonic acid
CAMBIO DE COLOR: azul - rojo
PREPARACION: 0.1 g in 5.9 mL 0.05 M NaOH + 94.1 mL water
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RANGO DE pH: 8.0-9.6



INDICADOR: Thymol Blue
CAMBIO DE COLOR: amarillo - azul
PREPARACION: 0.1 g in 21.5 mL 0.01 M NaOH + 228.5 mL water
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RANGO DE pH: 8.2-10.0



INDICADOR: Phenolphthalein
CAMBIO DE COLOR: incoloro - rosado
PREPARACION: 0.5 g in 100 mL 50% v/v ethanol-water
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RANGO DE pH: 8.2-10.0



INDICADOR: p-Naphtholbenzein
CAMBIO DE COLOR: anaranjado - azul
PREPARACION: 1% in dil. alkali
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RANGO DE pH: 8.2-9.8



INDICADOR: o-Cresolphthalein
CAMBIO DE COLOR: incoloro - rojo
PREPARACION: 0.04% in ethanol
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RANGO DE pH: 8.4-9.6



INDICADOR: Ethyl bis(2,4-dimethylphenyl)ethanoate
CAMBIO DE COLOR: incoloro - azul
PREPARACION: sat. solution in 50% acetone-ethanol
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RANGO DE pH: 9.4-10.6



INDICADOR: Thymolphthalein
CAMBIO DE COLOR: incoloro - azul
PREPARACION: 0.04 g in 100 mL 50% v/v ethanol-water

1 Response to "INDICADORES ACIDO - BASE"

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