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Calcium oxide
ক্যালসিয়াম অক্সাইড ব্যাপকভাবে শিল্পে ব্যবহৃত হয়, যেমন, চীনামাটির বাসন এবং কাচ তৈরিতে; শুদ্ধকরণ চিনি মধ্যে; ব্লিচিং পাউডার, ক্যালসিয়াম কার্বাইড এবং ক্যালসিয়াম সায়ানামাইড প্রস্তুত করতে; জল সফটনারগুলিতে; এবং মর্টার এবং সিমেন্টে। কৃষিতে এটি অ্যাসিডযুক্ত মৃত্তিকার চিকিত্সার জন্য ব্যবহৃত হয়.
CaO+H2SO4 → CaSO4+H2O
| CaO | Calcium Oxide |
| Density | 3.34 g/cm³ |
| Molar Mass | 56.0774 g/mol |
| Solubility | Soluble in water & glycerol |
| Boiling Point | 2,850 °C |
| Melting Point | 2,572 °C |
Uses of Calcium Oxide
- It is extensively used for medicinal purposes and insecticides.
- It finds its application in the manufacturing of cement, paper, and high-grade steel.
- Lime is used as a reagent in laboratories for dehydration, precipitation reaction, etc.
- It is the cheapest alkali available which is an important ingredient in the manufacturing of caustic soda.
- Calcium is essential to animal life as the constituent of bones, shells, and teeth. The most common of the calcium compounds are calcium carbonate which the potter uses as a source of calcium oxide for glazes.
Important Safety Tips
- There are few things that users should keep in mind regarding Calcium Oxides.
- The reaction between quicklime and water is usually vigorous.
- Quicklime can cause severe irritation, especially when inhaled or if it comes in contact with wet skin or eyes.
- Some of the effects of inhalation include sneezing, coughing, or laboured breathing.
- Additionally, it can also result in abdominal pain, nausea burns with perforation of the nasal septum, and vomiting.
- When quicklime reacts with water it can release enough heat to even ignite combustible materials.
FAQ’s
1. Who Discovered Calcium oxide?
Ans: It was first discovered in England in 1808 when a combination of lime and mercuric oxide was electrolyzed by Sir Humphry Davy.
2. Can you drink Limewater?
Ans: Lime water mimics hydrochloric acid which is found in the stomach and, therefore, helps prevent constipation and conditions such as diarrhoea.
3. Why is calcium important for bones?
Ans: Calcium makes bones more brittle. Getting enough calcium in your diet not only maintains healthy bones but also may help prevent hypertension.
4. What are the two uses of quicklime?
Ans: It is used as a basic flux. It is used in the refining of sugar and as a disinfectant and germicide.
5. Does calcium oxide dissolve in water?
Ans: Calcium oxide dissolves in water and glycerol.
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