Mathematics
Mathematics, 04.06.2020 13:12, forshee785

PROCEDIMENTO a) Utilizando-se de uma pipeta volumétrica, pipetar 10,0mL da solução padrão de biftalato de potássio a 0,1mol/L. B) Transferir este volume para um frasco erlenmeyer de 250mL de capacidade e acrescentar quatro gotas da solução indicadora fenolftaleína. C) Acrescentar ao erlenmeyer uma quantidade de água destilada suficiente para 50,0mL. D) Preencher a bureta com a solução de hidróxido de sódio. (Observar a técnica de preenchimento da bureta). E) Proceder à titulação, adicionando lentamente a solução de NaOH à solução do erlenmeyer, até o aparecimento de uma coloração rósea clara. F) Anotar, cuidadosamente, o volume da solução titulante gasta. G) Repetir mais duas vezes o procedimento descrito nas letras (a), (b), (c), (d), (e) e (f). H) O volume final de titulante será a média aritmética obtida nas três titulações. Faça um fluxograma sobre o processo escrito a cima

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PROCEDIMENTO a) Utilizando-se de uma pipeta volumétrica, pipetar 10,0mL da solução padrão de biftala...

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