Chemistry
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為什麼B選項可以用飽和食鹽水再生呢？
範例
硬水的軟化
9
甲
乙
某離子交換樹脂的裝置如右圖所示:甲管装填 RNa型陽
離子交換樹脂,乙管装填 ROH 型陰離子交換樹脂。當
、、、
含硫酸鈣的水溶液依序通過甲、乙兩管時,下列哪些敘
述正確?(應選2項) Na
(101. 學測】
(AN在甲管內,鈣離子會與氫離子交換
(B當甲管的交換率降低後,可用飽和食鹽水再生
在管內,硫酸根離子會與氫離子交換
D在管內,硫酸根離子會與氫氧根離子交換
TO
(E)當乙管交換率降低後,可用鹽酸再生
OH
一小撇步
伪)
陽離子需以陽離子交換,
陰離子則以陰離子換
CRA (69) 323
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那講義寫到陽離子交換樹脂可以用鹽酸使其再生為什麼也可以呢？