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 SO2

SO2 + NO2 SO3 + NO

Produced sulfuric anhydride is absorbed in water.

SO3 + H2O H2SO4

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Method 2

Bake sulfur and other sulfides such as pyrite and sphalerite.

S + O2 SO2

XS + O2 XO + SO2

X: metal

Oxidize sulfur dioxide by catalyser.

2SO2 + O2 2SO3

Dissolve in water.

SO3 + H2O H2SO4