ZnCO3(s) + H2SO4(aq)-----> ZnSO4(aq) + H2O(l) + CO2(g)
reaction 第一步係唔係 H+ 搶左 ZnCO3(s) 的 CO3 ?
定係CO3 react with water to form HCO3+ and OH-?
Can you offer explanation about how and why do the reaction occur?
In ZnCO3(s) + H2SO4(aq)...
2006-12-13 7:03 am
回答 (2)
2006-12-13 8:54 pm
✔ 最佳答案
ZnCO3 is insoluble, so interaction with water.H+ from H2SO4 attack CO3 2- since H+ stick to O atom in CO3 2- since O is high in electronegativity. When H+ combine with CO3 2-, the overall charges of the ion change and HCO3- is soluble in water. Then another H+ react with HCO3- to give H2O and CO2.
2006-12-13 10:36 pm
其實這是CO3同.acid 的reaction。所以product會係水、CO2 gas同 salt
CO3(2-) + 2H(+) ------------- CO2 + H2O
雖然 ZnCO3(s) 係 insoluble in water, 但係佢仍然會同 sulphuric acid react, 產生CO2、ZnSO4 同 H2O，而ZnSO4 係 soluble in water 的，所以唔會產生 protective layer 阻止個reaction 繼續進行，個 reaction 會繼續，直至 ZnCO3 或 H2SO4 其中一個用完為止。
CO3(2-) + 2H(+) ------------- CO2 + H2O
雖然 ZnCO3(s) 係 insoluble in water, 但係佢仍然會同 sulphuric acid react, 產生CO2、ZnSO4 同 H2O，而ZnSO4 係 soluble in water 的，所以唔會產生 protective layer 阻止個reaction 繼續進行，個 reaction 會繼續，直至 ZnCO3 或 H2SO4 其中一個用完為止。
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