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MATERIAIS NECESSARIOS: EXPERIMENTO DE MATEUS.
REAGENTES E SOLUÇÕES
Sais (cloreto de cálcio, cloreto de lítio, cloreto de bário, cloreto de sódio, cloreto
de potássio, carbonato de sódio, carbonato de cálcio e sulfato de cobre) Solução de HCl
concentrado.
VIDRARIA E INSTRUMENTAL
Béquer
Fios de níquel-cromo ou platina
Vidro de relógio
Espátula
Bico de Bunsen.
PROCEDIMENTO
 Medir uma espátula de cada sal em diferentes vidros de relógio; (observe os
aspectos prévios de cada sal, como cor, textura). Anote as informações de forma
mais detalhada possível.
 Acenda o bico de gás observe a cor da chama.
 Em seguida, prepara-se a haste com o fio de platina que serão utilizados como
suporte dos compostos até a chama. Mergulha-se a platina no ácido clorídrico,
para a limpeza e então, aquecido sobre a chama. Verifica-se se há alguma
alteração na cor da chama, caso sim, repita o procedimento até a platina estar
devidamente limpa.
 Mergulhe o fio limpo na amostra em estudo e observe a coloração da chama.
 Limpe cuidadosamente os fios metálicos e repita o processo com as outras
amostras.
Anote as informações:
Amostra Cor da
amostra
Cor da chama
esperada
Cor da Chama Metal
HCl
NaCl
LiCl
KCl
BaCl2
CaCl2
Na2CO3
CaCO3
CuSO4

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Materiais necessarios

  • 1. MATERIAIS NECESSARIOS: EXPERIMENTO DE MATEUS. REAGENTES E SOLUÇÕES Sais (cloreto de cálcio, cloreto de lítio, cloreto de bário, cloreto de sódio, cloreto de potássio, carbonato de sódio, carbonato de cálcio e sulfato de cobre) Solução de HCl concentrado. VIDRARIA E INSTRUMENTAL Béquer Fios de níquel-cromo ou platina Vidro de relógio Espátula Bico de Bunsen. PROCEDIMENTO  Medir uma espátula de cada sal em diferentes vidros de relógio; (observe os aspectos prévios de cada sal, como cor, textura). Anote as informações de forma mais detalhada possível.  Acenda o bico de gás observe a cor da chama.  Em seguida, prepara-se a haste com o fio de platina que serão utilizados como suporte dos compostos até a chama. Mergulha-se a platina no ácido clorídrico, para a limpeza e então, aquecido sobre a chama. Verifica-se se há alguma alteração na cor da chama, caso sim, repita o procedimento até a platina estar devidamente limpa.  Mergulhe o fio limpo na amostra em estudo e observe a coloração da chama.  Limpe cuidadosamente os fios metálicos e repita o processo com as outras amostras. Anote as informações: Amostra Cor da amostra Cor da chama esperada Cor da Chama Metal HCl NaCl LiCl KCl BaCl2 CaCl2 Na2CO3 CaCO3 CuSO4