How many grams of magnesium can be burned in 1.12 liters of oxygen?

Magnesium is oxidized very intensively by oxygen. The oxidation reaction is described by the following equation:

Mg + ½ O2 = MgO;

During oxidation, one oxygen atom is attached to the magnesium atom. In this case, one molecule of magnesium oxide is synthesized.

Let’s determine the chemical amount of oxygen.

To do this, we divide its volume by the volume of 1 mole of gas.

N O2 = 1.12 / 22.4 = 0.05 mol;

With this amount of oxygen, 2 times more magnesium will react.

Let’s calculate the weight of magnesium oxide.

Let’s multiply the molar amount of the substance and the weight of 1 mole of the substance.

M Mg = 24 grams / mol; m Mg = 0.05 x 2 x 24 = 2.4 grams;