When calcium and lead add on sulphuric acid, the bubble firstly forms quickly, but the reaction stops suddenly.
更新1:
Is it form 4 syllabus?
Chemistry
2009-12-14 3:25 am
Explain the following situation:
When calcium and lead add on sulphuric acid, the bubble firstly forms quickly, but the reaction stops suddenly.
When calcium and lead add on sulphuric acid, the bubble firstly forms quickly, but the reaction stops suddenly.
回答 (1)
2009-12-14 5:04 am
✔ 最佳答案
Calcium and lead first reacts with the sulphuric acid, hydrogen(if it is a dilute acid) and calcium/lead sulphate is produced. Both calcium sulphate and lead sulphate are insoluble in water. Therefore, the insoluble calcium/lead sulphate produced coated on the surface of calcium/lead which prevent further reaction and the reaction stops suddenly.It is in the CE level
參考: ME
收錄日期: 2021-04-23 18:28:16
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