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• permaganato de potássio originário da república democrática alemã, da república popular da china e da checoslováquia.
despite the goodwill of the community and the appropriate gatt rules, on 31 march the united states' authorities announced that they intended to impose restrictions on community exports to compensate for losses which the united states might suffer in some of its exports considered in isolation (soya and cereals to portugal and maize and sorghum to spain).
depois de diluir o precipitado em ácido sulfurico, titula-se o ácido oxálico formado com uma solução de permaganato de potássio.
dissolve the precipitate in sulphuric acid and titrate the oxalic acid which forms with a solution of potassium permangante.
elevar a temperatura a 70-80 ºc e titular gota a gota por meio de solução de permaganato de potássio (3.9) até à obtenção duma coloração rosada que persista durante 1 minuto.
bring the temperature up to 70-80 ºc and titrate drop by drop with a solution of potassium permanganate (3.9) until a pink colour is obtained which lasts for one minute.