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Woate ŋu akpɔ nya siwo bɔ gbɔ ale. Ne èdi be yeaƒo ƒu la, tsɔ ati si wotsɔ ƒoa ƒui la ƒo reagent-tu la blewuu—mègazã gaku gbeɖe o. Amadede si do viviti fia be oxidation ƒe akpa aɖe le eme, si woate ŋu akpɔ to sulphur powder si sɔ gbugbɔgade eme me. Ele be woaɖe tsi siwo me alilikpo le la me hafi adzidze woƒe agbɔsɔsɔme, eye woazã pepa si me woɖea agbɔsɔsɔme le blewu si me wotsɔa ƒuƒoƒo eve ƒoa ƒui. Ne Sodium Sulfide reagent ƒe aŋetu ƒe dzeside ge la, gbugbɔ ŋlɔe enumake to dzesidenu si me tsi mate ŋu age ɖo o zazã me, eye nàde dzesi ŋkeke si dzi woʋui.Sodium Sulfide.