Magnesium nitride (Mg3N2 ) reacts with water and kind magnesium hydroxide (Mg(OH)2) white precipitate and also ammonia gas. This reaction is used to prove that air includes nitrogen gas.

You are watching: Magnesium nitride (s) + water (l) magnesium hydroxide (aq) + ammonia (aq)


Mg3N2 + H2O → Mg(OH)2 + NH3

Magnesium nitride and water reaction and type a white precipitate, magnesium hydroxide and also ammonia gas. Magnesium hydroxide is not s dissolve hydroxide in water. But due to existing hydroxyl ions in the aqueous solution, solution will come to be basic. Created ammonia gas is a an easy gas too and also can be determined by numerous tests.

Magnesium nitride (Mg3N2)

Magnesium nitride is an inorganic compound which is make by magnesium and also nitrogen. At room temperature and pressure, that is a pale yellow powder.

Balanced Equation of magnesium nitride and also water reaction

Mg3N2(s) + 6H2O(l) → 3Mg(OH)2(s) + 3NH3(g)

According to the stoichiometry , 1 mol that Mg3N2 react v 6 mol the water and give 3 mole of Mg(OH)2 and also 3 mol the NH3.

How perform I conduct this reaction in the laboratory?

Here, i am walking to describe how come prepare ammonia gas utilizing magnesium metal. Be careful, as soon as you conduct this experiment because ammonia is a toxic gas and be mindful from burnings too.

Find a magnesium piece and burn that in the air. Magnesium oxide and also magnesium nitride are provided as products.

Mg + N2 → Mg3N2Mg + O2 → MgO

Then include products come water. You have the right to test ammonia gas i m sorry is released together a product indigenous the reaction.

Because magnesium oxide is additionally with magnesium nitride, magnesium oxide additionally give magnesium hydroxide precipitate.

How to prove air consists of nitrogen gas?

Conduct the very same experiment i m sorry is described above. Since ammonia gas is produced, there must be a nitrogen source when pre-reactions are occurred. But, us don"t know what space the commodities given through the an initial reaction. But, I write them now to make easy the understanding of yours.

Mg(s) + N2(g) → Mg3N2(s)Mg(s) + O2(g) → MgO(s)Water go not have nitrogen atoms. Therefore, water can not be a resource for nitrogen.Then, resource of nitrogen should be air.

Is magnesium nitride soluble in water?

Magnesium nitride dissolves very well in water and also reacts v water to develop magnesium hydroxide and also ammonia gas. Magnesium hydroxide is a white colour precipitate.

Formation that magnesium hydroxide precipitate once magnesium nitride reacts through water

Due to formation of white color magnesium hydroxide precipitate, someone can say or see, as magnesium nitride is insoluble in water. But, fact is magnesium nitride is soluble in water.

Questions inquiry by students

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What is wrong about following sentences about magnesium nitride and also water reaction?

Nitrogen"s oxidation number is defended during the reaction. This reaction is a for sure reaction come do. Product equipment will show pH values greater than 7.

Statement 3 is wrong. This reaction emits ammonia gas together a product. Ammonia is a toxicity gas and also can damage people.

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Will give a precipitate when magnesium nitride reacts v water? Is magnesium nitride soluble?

Yes. A white precipitate is formed when magnesium nitride is included to water. Therefore, magnesium nitride is dissolve in water.