"calcium react faster with 1M sulphuric acid than 1M hydrochloric acid."
點解依個statement係錯o既?
sulphuric acid唔係dibasic咩..應該h+ o既concentration係高d ga wo
chem - molarity o既問題
2007-03-30 7:56 am
回答 (1)
2007-03-30 8:32 am
✔ 最佳答案
When calcium reacts with sulphuric acid, calcium sulphate and hydrogen is formed.Ca(s) + H2SO4(s) → CaSO4(s) + H2(s)
The insoluble CaSO4 coats on the surface of the calcium granules. This will reduce the surface area of calcium and thus will lower the reaction rate.
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