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cccc asked in 科學及數學化學 · 1 decade ago

電解鹽水 experiment

我係home到試驗架

同2隻aa電池做

electrode係鐵

我同dilute鹽水就做到d泡泡係電池負極到出 (hydrogen)

但係正極就冇bubble出

solution慢慢變做黃色

而用conc鹽水果陣

正極照舊出bubble

solution變成綠色,係ppt黎

有冇人explain到比我聽究竟係點

有d亂

1 Answer

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  • 1 decade ago
    Favorite Answer

    Fe係有兩種離子:Fe2- 同 Fe3-

    Fe2-離子的合成物會變綠色,面Fe3-就會係黃色~

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