What is the chemical reaction between magnesium and sulfur?

The bubbling of hydrogen gas is a dead giveaway that a chemical reaction is occurring when magnesium metal is combined with any acid, including sulfuric acid.

Mg(s) + H2SO4(aq) → MgSO4(aq) + H2(g)

The following is the word equation for the reaction between magnesium and sulfuric acid:

Magnesium + sulfuric acid → magnesium sulfate + hydrogen gas

The balanced chemical equation:

Mg(s) + H2SO4(aq) → MgSO4(aq) + H2(g)

The molar mass of Mg is 24.3g and of S is 32.1g.

So, we have 1.50/24.3 = 0.0617mol Mg, and

1.50/32.1 = 0.0467mol S

Sulfur is the limiting reactant, and the thermodynamic equation is therefore

0.0467Mg + 0.0467S = 0.0467MgS

Change in Free Energy: ΔG(100C) = -15.9kJ (negative, so the reaction runs)

Change in Enthalpy: ΔH(100C) = -16.2kJ (negative, so the reaction is exothermic)

The excess Mg is 0.0617 – 0.0467 = 0.015mol, which is 0.015 x 24.3 = 0.365g Mg

Cheers, Liz!

It is magnesium sulphide, MgS.

The two elements combine in hot condition to form this binary compound.

Mg + S → MgS

Magnesium sulphide is moisture - sensitive and it easily reacts with water to give magnesium hydroxide and hydrogen sulphide gas (hydrolysis).

Magnesium plus sulfuric acid produces magnesium sulfate and hydrogen gas:

Mg + H2SO4 = MgSO4 + H2(g)

Change in Free Energy: ΔG(20C) = -457.4kJ (negative, so the reaction runs)

Change in Enthalpy: ΔH(20C) = -447.6kJ (negative, so the reaction is exothermic)

What happens when you mix sulphuric acid and the element magnesium with each other?

When the acid is added to the magnesium, there is a lot of fizzing as the acid dissolves the metal and hydrogen gas is released. The magnesium goes into solution and can be recovered in the form of magnesium sulphate (Epsom Salts).

Mg + H2SO4 -> MgSO4 + H2

For safety, only use small quantities of the acid, and wear suitable eye protection (goggles).

A couple possibilities :

MgCl2(aq) + Na2CO3(aq) > 2NaCl(aq) + MgCO3(s)

MgCO3(s) + 2HCl(aq) > MgCl2(aq) + CO2(g) + H2O

Dihydrogen gas, and magnesium sulfate are evolved…as is typical, active metal, plus acid, gives a salt and dihydrogen gas…

[math]Mg(s) + H_{2}SO_{4}(aq) longrightarrow MgSO_{4}(aq) + H_{2}(g)uparrow[/math]

The reaction between sulfuric acid and magnesium hydroxide is known as neutralisation reaction.

Neutralisation reaction is the reaction between an acid and a base, which then yields salt and water.

In this reaction, magnesium hydroxide, which is a base, reacts with sulfuric acid to form magnesium sulphate, which is a salt, and two molecules of H20.

The reaction can be represented in the form of an equation:-

Mg(OH)2 + H2SO4 ———-> MgSO4 + 2H2O

Hope this helps! :)

Mg+s=MgS

The reaction is the following:

MgCO3 + H2SO4————————→ MgSO4 + CO2 + H2O

You will see evolution of carbon dioxide. It is an exothermic reaction.