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Intranet

Superabsorción

Objetivo: Observar las propiedades absorbentes de los pañales

  • Material de laboratorio

    Recipiente de plástico

    Tijeras

  • Reactivos

    Pañal

    Cloruro sódico (NaCl)

    Agua

  • Preguntas

    ¿Qué sustancia es este polvo?

    Menciona otros posibles usos de esta sustancia.

    ¿Cuál es la causa del fenómeno que se observa al añadir cloruro sódico?

Procedimiento

  • Abre el pañal con ayuda de unas tijeras y extrae con cuidado la sustancia en polvo que contiene.
  • Pon un poco de este polvo en un cristalizador, añade agua destilada y observa lo que ocurre.
  • Por último, añade cloruro sódico (o sal de mesa), agita el cristalizador y observa de nuevo lo que ocurre.

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