Question

short notes of ionic carbide​

Answer 1

Answer:

Carbides are compounds composed of carbon and less electronegative elements and they are distinguished by their chemical bonding (ionic, covalent). They are generally prepared from metals or metal oxides at high temperatures (1500 °C or higher) by combining the metal with carbon.

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Answer 2

A binary compound of carbon

Explanation:

Carbide is a binary compound of carbon with a lower electronegative element.

Carbides are classified on the basis of chemical bonding in the following compounds -

• Salt-like ionic carbides (Acetylides, Methanides, Allylides, Mixed carbides)
• Covalent carbides
• Interstitial carbides

Preparation of Carbide :

When an element or its oxide is heated under high temperatures with carbon and hydrocarbon it forms carbide.

$Ba + 2C$ ⇒ $BaC_2$

$CaO + 3C$ ⇒ $CaC_2 + CO$

Uses :

• In the chemical industry, calcium carbide $(CaC_2)$ is an important feedstock
• Iron carbide $(Fe_3C, cementite)$ is produced in steels to enhance their properties