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No item 9, por que se adiciona cloroformio ao final da reação? Por que aparece uma coloração violeta?
Experimento:
Colocar 2ml de solução de KI em um tubo de ensaio.
Adicionar 2ml de agua de cloro. Observar.
Adicione 2ml de CHCL3. Agitar. Observar a coloração.