Thermal Decomposition of Sulfuric Acid

H2SO4 → H2O + SO3

अवलोकन

Concentrated sulfuric acid decomposes at high temperatures (above 340 C) into water vapor and sulfur trioxide gas. This is the reverse of the hydration reaction that produces sulfuric acid. The equilibrium shifts toward decomposition at high temperatures.

प्रतिभागी

भूमिका पदार्थ गुणांक अवस्था
अभिकारक Sulfuric Acid H₂SO₄ 1 (l)
उत्पाद Water H₂O 1 (g)
उत्पाद Sulfur Trioxide SO₃ 1 (g)

रोजमर्रा का उदाहरण

This decomposition is relevant to understanding why concentrated sulfuric acid fumes in hot weather and must be stored properly.

औद्योगिक महत्व

This equilibrium is important in sulfuric acid concentration processes and in the lead-chamber and contact processes for sulfuric acid manufacturing.

गुण

प्रकार
Decomposition
प्रतिवर्ती
हाँ
ऊर्जा
ऊष्माशोषी
ΔH
177.0 kJ/mol

संबंधित अभिक्रियाएँ

Decomposition of Ammonium Nitrate Decomposition of Calcium Hypochlorite Decomposition of Carbonic Acid Decomposition of Iron(II,III) Oxide (Direct Reduction) Decomposition of Nitrous Oxide (Laughing Gas) Decomposition of Barium Peroxide Decomposition of Sodium Bicarbonate Decomposition of Water (Electrolysis) Thermal Decomposition of Copper(II) Carbonate Cracking of Octane (Thermal Cracking)

Frequently Asked Questions

What is the equation for Thermal Decomposition of Sulfuric Acid?
The balanced equation is: H₂SO₄ → H₂O + SO₃.
What type of reaction is Thermal Decomposition of Sulfuric Acid?
Thermal Decomposition of Sulfuric Acid is a decomposition reaction. It is reversible under certain conditions.
Is Thermal Decomposition of Sulfuric Acid exothermic or endothermic?
Thermal Decomposition of Sulfuric Acid is endothermic (absorbs energy). The enthalpy change (ΔH) is 177.0 kJ/mol.