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because new substance is formed in chemical composition & hence they cannot be reversed.
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∙ 11y ago
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Explain why sublimation is regarded as a physical change but the slaking of lime is considered as a chemical change?
- Sublimation don't change the molecule; solid iodine or sublimated iodine are iodine. - Slaking of lime transform the calcium oxide in calcium hydroxide. A chemical change occur.
What is slake lime?
Quicklime is calcium oxide - CaO and slaked lime is calcium hydroxide - Ca(OH)2. CaCO3--------------CaO + CO2 This reaction occur at high temperature; mixing calcium oxide with water, the hydroxide is obtained.
Is producing carbon dioxide gas and solid lime by heating limestone is chemical change?
Yes it is
5 examples of chemical change?
1 Burning of paper in the air. 2 Dissolving calcium in water 3 Slaking of Lime 4 Tanishing of silver when exposed to air 5 Clotting of blood in a wound.
What is slate lime's chemical name?
The chemical name for slate lime is calcium hydroxide, which is also known as slaked lime or hydrated lime.
Explain why sublimation is regarded as a physical change but the slaking of lime is considered as a chemical change?
- Sublimation don't change the molecule; solid iodine or sublimated iodine are iodine. - Slaking of lime transform the calcium oxide in calcium hydroxide. A chemical change occur.
Why is slaking of lime is necessary?
- to obtain calcium oxide - to obtain calcium hydroxide
How many times the volume of fat lime increases compared to volume of quick lime on slaking?
2-2.5 times.
What is slake lime?
Quicklime is calcium oxide - CaO and slaked lime is calcium hydroxide - Ca(OH)2. CaCO3--------------CaO + CO2 This reaction occur at high temperature; mixing calcium oxide with water, the hydroxide is obtained.
Is adding lime to baking soda a chemical change?
Baking Soda (sodium bicarbonate)
Is producing carbon dioxide gas and solid lime by heating limestone is chemical change?
Yes it is
5 examples of chemical change?
1 Burning of paper in the air. 2 Dissolving calcium in water 3 Slaking of Lime 4 Tanishing of silver when exposed to air 5 Clotting of blood in a wound.
What kind of reaction occurs when sulphur dioxide reacts with lime water?
A chemical change. CaSO3 is insolube in water.
What is the chemical name and formula for Hydrated lime?
The chemical name for hydrated lime is Calcium hydroxide The chemical formula is Ca(OH)2.
What is the chemical formula for Garden Lime?
Garden Lime, also known as Calcium Carbonate, is simply CaCO3.
What is slate lime's chemical name?
The chemical name for slate lime is calcium hydroxide, which is also known as slaked lime or hydrated lime.
What is the chemical name for lime or quicklime?
Lime or quicklime is calcium oxide.
