What is the sample's alkalinity if the phenolphthalein indicator does not turn the sample pink?

ID de documento

ID de documento TE105

Fecha de publicación

Fecha de publicación 17/08/2020
Pregunta
What is the sample's alkalinity if the phenolphthalein indicator does not turn the sample pink?
Resumen
Phenolphthalein alkalinity endpoint from pink to colorless
Respuesta
Phenolphthalein alkalinity uses a phenolphthalein indicator that changes from pink to a colorless endpoint. If the sample does not turn pink after adding the indicator, the sample does not have phenolphthalein alkalinity. The sample will also not have any phenolphthalein alkalinity if less than pH 8.3.

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