sodium thiosulpate
2006-10-25 3:37 am
唔該，我想問點解我做ｅｘｐｅｒｉｍｅｎｔ哥陣，用ｂｅａｋｅｒ裝sodium thiosulphate solution，隔了一陣ｄ ｓｏｌｕｔｉｏｎ 有ｄ白色野，其他ｇｒｏｕｐ都唔會喎，咁我想問個ｂｅａｋｅｒ會唔會係有咩呢？
回答 (2)
2006-10-25 4:54 am
✔ 最佳答案
Do you remember the experiment to investigate rate of reaction.You put an X on a paper and put on it a beaker containing thiosulphate and HCl. Yellow ppt. of sulphur formed and make the X invisible.
So. I guess your beaker is not washed clean enough. e.g. it has acid residue.
Yellow sulphur is formed.
2006-10-25 3:43 am
你有冇做distillation架
收錄日期: 2021-04-25 16:24:51
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