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Química Analítica – solução tampão
nao sei como chegou a esse resultado podem me ajudar ?? já procurei em livros e pela internet tbm a pergunta é a seguinte Quantos gramas de CH3COONa devem ser adicionados a 1,00mol de CH3COOH, a fim de preparar 1 litro de um tampão cujo pH é igual a 5,15 ? (Ka= 1,8×10-5)…. o resultado é 208g , nao sei como chegou a esse resultado podem me ajudar ??
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