0
Why is water added to The Crucible in order to complete the conversion to magnesium oxide?
Wiki User
∙ 11y ago
Water is added to the crucible to convert magnesium (Mg) to magnesium oxide (Mg(OH)2) because when magnesium reactions with air, it also reacts with the nitrogen (N2) in the air to form magnesium nitride (Mg3N2).
3 Mg + N2 --> Mg3N2
By adding water to the crucible containing the magnesium nitride, the magnesium nitride will become magnesium hydroxide. The ammonia gas produced will rise out of the crucible, eliminating the nitrogen.
Mg3N2 + H2O --> 3Mg(OH)2 + 2NH3
After heating the magnesium hydroxide, the product becomes just magnesium oxide.
3Mg(OH)2 + heat --> MgO + H2O
In other words, when water is added, the nitrogen will react with the water, causing it to form ammonia and thus evaporating from the substance. This leaves behind the magnesium hydroxide, which becomes magnesium oxide and water after it is heated.
Wiki User
∙ 11y ago
Add your answer:
Earn +20 pts
How much sodium hydroxide in grams must be added to seawater to completely precipitate 86.9mg of magnesium?
how much sodium hydroxide in grams must be added to seawater to precipitate 86.9mg of magnesium present?
How tp prepare magnesium acetate?
when a piece of Magnesium is added to acetic acid bubbles of H2 gas are produced and solution becomes milky now evaporate the excess acid and water by heating and get solid Magnesium acetate.
What is the balanced reaction when a strip of magnesium is added to a solution of silver nitrate?
Mg + 2AgNO3→ Mg(NO3)2 +2Ag
Why does magnesium get heavier when its burned?
What happens when magnesium burns? What do you need for magnesium to burn? Will magnesium burn if you have it in a closed container? No. Why not? It needs air. Why does it need air? There is oxygen in the air. Magnesium needs oxygen to burn. So, when magnesium burns, you start with magnesium and end up with a compound that contains both magnesium and oxygen. Magnesium has an atomic weight of 24. Oxygen has an atomic weight of 16. So if you start out with 24 grams of Magnesium you should end up with 40 grams of Magnesium Oxide.
Magnesium hydroxide added to phosphoric acid produces magnesium phosphate and water find the mass percentage of each compound as well as the total mass of reactants compared to the total mass?
2H3PO4+3Mg(OH)2->Mg3(PO4)2+6H2O
What happens if magnesium ribbions is added in acetic acid?
what happens if magnesium ribbions is added in acetic acid
When added with acid which metal reacts fastest iron or magnesium?
magnesium
What happens when magnesium oxide is added to water the salt will be?
Magnesium oxide react with water and magnesium hydroxide is formed.
What happens when dilute hydrochloric acid is added to magnesium?
Magnesium react easily with hydrochloric acid and magnesium chloride is obtained.
Magnesium oxide reacts with sulfur trioxide?
Magnesium Oxide Reacts With Sulfur Trioxide added: Magnesium sulfate is formed: MgO + SO3 --> MgSO4
What gas was produced when water is being added to Magnesium Oxide?
Magnesium oxide don't react with water.
What colour does magnesium turn added with water and universal indicator?
It first starts as yellow with only the indicator in the water, but when the magnesium is added, it turns green, then blue, and lastly purple
When solid magnesium carbonate is added to a lot of hydrochloric were does the solid magnesium carbonate go?
They react to form H2CO3 and MgCl2
How much sodium hydroxide in grams must be added to seawater to completely precipitate 86.9mg of magnesium?
how much sodium hydroxide in grams must be added to seawater to precipitate 86.9mg of magnesium present?
What is the ending of the word equation magnesium plus hydrochloride acid?
Mg + 2HCl --> MgCl2 + H2 Magnesium added to Hydrochloric Acid makes Magnesium Chloride and Hydrogen gas
When magnesium carbonate is added to dilute hydrochloric acid what salt does it form?
Magnesium Chloride. MgCO3 +2HCl -----> MgCl2 + CO2 + H2O
Is magnesium sulfate a hydrate?
Magnesium sulfate by itself is not a hydrate.A hydrate has water in it. Magnesium only have magnesium, sulfur, and oxygen. Added with water, it is considered as a hydrate. The most common one is heptahydrate epsomite (MgSO4·7H2O).
