H2SO4 is an oxidizing agent, Mg is a reducing agent.
Reactants:
Mg
Names: Magnesium, Magnesium (powder), Magnesium (pellets)Mg, Element 12, Magnesium turnings
Appearance: Grey powder ; Silvery-white metallic solid in various forms
H2SO4 – Sulfuric acid
Other names: Oil of vitriol, Sulfuric acid, concentrated (> 51% and < 100%), H2SO4Sulphuric acid, Battery acid, Hydrogen sulfate, [SO2(OH)2], [S(OH)2O2], Sulfuric acid (aqueous)
Appearance: Clear, colorless liquid ; Odourless colourless oily hygroscopic liquid ; Colorless to dark-brown, oily, odorless liquid. [Note: Pure compound is a solid below 51°F. Often used in an aqueous solution.]
Products:
MgSO4 – Magnesium sulfate
Other names: Epsom salt (heptahydrate), English salt, Bitter saltsBath salts, MgSO4, Magnesium sulphate, Magnesium sulfate anhydrous, Epsom salt, Heptahydrate, Magnesium(II) sulfate, Magnesium sulfate (1:1), Magnesiumsulfat
Appearance: White crystalline solid ; Hygroscopic odourless white crystals or powder