假如一個chemical cell 有兩個reactivity不同的metal and salt solution of theirs metal ions
如果冇左salt bridge,點解會冇左current?
但係唔係就算冇salt bridge,都會有electrons transfer,咁應該會有current,點解冇o既?
同埋,ions 許一個half-cell係move to另一個half-cell定係move to salt bridge?
salt bridge in simple chemical cell
2007-01-30 9:43 am
回答 (2)
2007-01-30 11:35 am
✔ 最佳答案
呢個唔係化學問題,呢個係物理問題.因為冇O左SALT BRIDGE,即係OPEN CIRCUIT,點會有電流?electron transfer由邊度去邊度?solution去METAL?佢O地之間有直接接觸,唔會經電線,所以唔會有電.
兩個half-cell之間隔住O左salt bridge,所以ions係去salt bridge同electrodes.防止ions去另一個half-cell正正係salt bridge O既目的.
噉先可以避免唔想要O既金屬deposit O係electrode上面.
2007-05-28 12:30 am
LowB,答錯野,
冇左SALT BRIDGE一樣有current
只不過會跌得好快
冇左SALT BRIDGE一樣有current
只不過會跌得好快
收錄日期: 2021-04-12 21:52:46
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