Question

write the chemical properties of oxygen​

Answer 1

Answer:

Chemical properties of oxygen - Health effects of oxygen - Environmental effects of oxygen

Atomic number 8

Atomic mass 15.999 g.mol -1

Electronegativity according to Pauling 3.5

Density 1.429 kg/m3 at 20°C

Melting point -219 °C

Answer 2

Chemical properties of oxygen :

• Combustility,
• Reaction with metals,
• Reaction with non metals,
• Reaction with Hydrocarbons,
• Rusting.

1. Combustility :-

Oxygen is a non - combustible gas as it does not burn on its own. But, it supports the combustion of other substances.

2. Reaction with metals :-

Oxygen reacts with metals like sodium, potassium, magnesium, aluminum, iron etc..., to form their corresponding metal oxides which are generally basic in nature. But the metals differ in their reactivity towards oxygen.

$\sf{Metal\:+\:Oxygen\:⟶\:Metal\:oxide}$

Example,

$\sf{4Na\:+\:O_{2}\:⟶\:2Na_{2}O}$

$\sf{Sodium\:+\:Oxygen\:⟶\:Sodium\:oxide}$

3. Reaction with non metals :-

Oxygen reacts with various non - metals like hydrogen, nitrogen, carbon, sulphur, phosphorous, etc..., to give corresponding non metallic oxides, which are generally acidic in nature.

$\sf{Non-Metal\:+\:Oxygen\:⟶\:Non-Metal\:oxide}$

Example,

$\sf{C\:+\:O_{2}\:⟶\:CO_{2}}$

$\sf{Carbon\:+\:Oxygen\:⟶\:Carbon\:dioxide}$

4. Reaction with Hydrocarbons :-

Hydrocarbons react with oxygen to form carbon dioxide and water vapour. Wood, Petrol, Diesel, LPG, etc... when they burn in oxygen, they produce heat and light energy. Hence the serve as fuel.

Example,

$\sf{Hydrocarbon\:+\:O_{2}\:⟶\:CO_{2}\:+\:Water\:+\:Heat\:+\:Light}$

5. Rusting :-

The process of conversion of iron into its hydrated form of oxides in the presence of air and moisture is called rusting. Rusting is hydrated ferric acid.

Example,

$\sf{4Fe+3O_{2}\:⟶\:2Fe_{2}O_{3}}$

$\sf{Fe_{2}\:O_{3}+\:x\:H_{2}O\:⟶\:Fe_{2}O_{3}\:•\:x\:H_{2}O}$

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