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Producing Sulfuric acid (H2SO4)

H2SO4: Sulfuric acid

for phosphatic fertilizer and titanium oxide

Method 1

Burn sulfur and sodium nitrate with small amount of water in a glass ball.

S + O2 right SO2 right

SO2 + NO2 right SO3 + NO

down

Produced sulfuric anhydride is absorbed in water.

SO3 + H2O right H2SO4


Method 2

Bake sulfur and other sulfides such as pyrite and sphalerite.

down

S + O2 right SO2 right

XS + O2 right XO + SO2 right

X: metal

down

Oxidize sulfur dioxide by catalyser.

2SO2 + O2 right 2SO3

down

Dissolve in water.

SO3 + H2O right H2SO4

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