Question

Which best describes this reaction between magnesium and oxygen? decomposition and redox reactions single-replacement and redox reactions double-replacement and redox reactions combustion and redox reactions

Answer 1

The reaction between magnesium and oxygen is best described as a combustion and redox reaction, with magnesium being oxidized as it burns in the presence of oxygen to form magnesium oxide.

Step-by-step explanation:

The reaction that best describes the interaction between magnesium and oxygen is a combustion and redox reaction. When magnesium reacts rapidly with oxygen upon ignition, it combines with oxygen from the air to form a fine powder of magnesium oxide, as represented by the chemical equation 2Mg (s) + O₂(g) → 2MgO (s). This process is considered a combustion reaction because magnesium is burning in the presence of oxygen, and it is also a redox reaction because there is a transfer of electrons, with magnesium being oxidized and oxygen being reduced.

Answer 2

Combustion and redox

Step-by-step explanation:

Magnesium is burned in the presence of oxygen and form magnesium oxide.

The oxidation -reduction also take place that's why the given reaction is redox.

These reactions are take place by gaining or losing the electrons and oxidation state of elements are changed.

Oxidation:

Oxidation involve the removal of electrons and oxidation state of atom of an element is increased.

Reduction:

Reduction involve the gain of electron and oxidation number is decreased.

Consider the following reactions.

2Mg + O₂ → 2MgO

the oxidation state of magnesium is changed from 0 to +2 so it get oxidized.

The oxidation state of oxygen is changed from 0 to -2 so it get reduced.