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Laila Camila
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Joined: Wed Mar 31, 2021 12:33 pm

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Post by Laila Camila »

Um laboratório recebeu uma amostra de cloreto de potássio com suspeita de conter impurezas. Para analisar o grau de pureza da amostra procedeu-se da seguinte maneira:
Tomou-se 0,2500 g da amostra de KCl impuro, adicionou-se um excesso de uma solução de AgNO3 que resultou na formação de 0,2817 g de AgCl.

Calcule a porcentagem de KCl na amostra impura.
Ag+(aq) + Cl-(aq) AgCl(s)
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