1)What is the chemical equation of lime?
2)What is the chemical equation of lime stone?
3)Why lime stone + sulphuric acid (H2SO4) is not a kind of neutralization but
lime + acidic soil is?
4) Lime is alkaline but how about lime stone?
Lime and Lime Stone
2008-04-10 12:55 am
回答 (2)
2008-04-10 1:27 am
✔ 最佳答案
1.The chemical formula of lime is CaO.
Calcium oxide (CaO) is usually known as lime, quicklime or burnt lime.
It is chemical formula, but not chemical equation. A chemical formula is used to describe a substance, but a chemical equation is used to describe a chemical reaction.
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2.
The chemical formula of lime stone is CaCO3.
Lime stone is a type of mineral which contains mainly calcium carbonate (CaCO3).
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3.
Traditional definition of neutralization is :
acid + alkali/base → salt + water
The reaction between lime stone and sulphuric acid:
CaCO3 + H2SO4 → CaSO4 + H2O + CO2
Since CO2 is also formed, the reaction does not fulfill the tradition definition of neutralization.
The reaction between lime and acidic soil (denote the acid as HA).
CaO + 2HA → CaA2 + H2O
CaA2 is a salt, and the reaction is neutralization.
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4.
"A substance is alkaline" means that the substance can give or form OH-(aq) when it is dissolved to form an aqueous solution.
Lime water is insoluble in water. Therefore, it is not an alkaline.
2008-04-11 1:23 am
1.
The chemical formula of lime is CaO.
Calcium oxide (CaO) is usually known as lime, quicklime or burnt lime.
It is chemical formula, but not chemical equation. A chemical formula is used to describe a substance, but a chemical equation is used to describe a chemical reaction.
==========
2.
The chemical formula of lime stone is CaCO3.
Lime stone is a type of mineral which contains mainly calcium carbonate (CaCO3).
==========
3.
Traditional definition of neutralization is :
acid + alkali/base → salt + water
The reaction between lime stone and sulphuric acid:
CaCO3 + H2SO4 → CaSO4 + H2O + CO2
Since CO2 is also formed, the reaction does not fulfill the tradition definition of neutralization.
The reaction between lime and acidic soil (denote the acid as HA).
CaO + 2HA → CaA2 + H2O
CaA2 is a salt, and the reaction is neutralization.
4.
"A substance is alkaline" means that the substance can give or form OH-(aq) when it is dissolved to form an aqueous solution.
Lime water is insoluble in water. Therefore, it is not an alkaline.
The chemical formula of lime is CaO.
Calcium oxide (CaO) is usually known as lime, quicklime or burnt lime.
It is chemical formula, but not chemical equation. A chemical formula is used to describe a substance, but a chemical equation is used to describe a chemical reaction.
==========
2.
The chemical formula of lime stone is CaCO3.
Lime stone is a type of mineral which contains mainly calcium carbonate (CaCO3).
==========
3.
Traditional definition of neutralization is :
acid + alkali/base → salt + water
The reaction between lime stone and sulphuric acid:
CaCO3 + H2SO4 → CaSO4 + H2O + CO2
Since CO2 is also formed, the reaction does not fulfill the tradition definition of neutralization.
The reaction between lime and acidic soil (denote the acid as HA).
CaO + 2HA → CaA2 + H2O
CaA2 is a salt, and the reaction is neutralization.
4.
"A substance is alkaline" means that the substance can give or form OH-(aq) when it is dissolved to form an aqueous solution.
Lime water is insoluble in water. Therefore, it is not an alkaline.
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