Readers ask: How Sulphuric Acid Is Prepared By Contact Process?

What is the key step in the manufacture of H2SO4 by contact process is?

The key step in the production of sulfuric acid is the contact process, which convert SO 2 to SO 3: SO 2 (g) + 1 / 2 O 2 (g) ⇄ SO 3 (g);  H o = -99 kJ This reaction, although spontaneous, is very slow due to high activation energy.

Why manufacture of Sulphuric acid is called contact process?

The Hot gases( SO2 ) evolved from burning of sulfur ore comes in contact with catalyst bed, So the name of this process is called contact process.

How is Sulphuric acid prepared in the laboratory?

In the first step, sulfur is burned to produce sulfur dioxide. This is then oxidised to sulfur trioxide using oxygen in the presence of a vanadium(V) oxide catalyst. Finally the sulfur trioxide is treated with water (usually as 97-98% H2SO4 containing 2-3% water) to produce 98-99% sulfuric acid.

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Which catalyst is used in contact process?

The contact process is the current method of producing sulfuric acid in the high concentrations needed for industrial processes. Platinum used to be the catalyst for this reaction. However, as it is susceptible to reacting with arsenic impurities in the sulfur feedstock, vanadium(V) oxide ( V 2O5) is now preferred.

How H2SO4 is formed?

Sulfuric acid is prepared industrially by the reaction of water with sulfur trioxide (see sulfur oxide), which in turn is made by chemical combination of sulfur dioxide and oxygen either by the contact process or the chamber process. 4 дня назад

Why As2O3 is used in contact process?

A promoter increases the activity of a catalyst while the substance which reduces the catalytic activity is called poison. Thus, As2O3 acts as a catalytic poison in contact process during the formation of sulphur trioxide and the correct option is (b) catalytic poison.

Why is Sulphuric acid syrupy?

Because of intermolecular hydrogen bonding sulphuric acid (H2SO4.) is syrupy simply because it is a viscous liquid.

Why is Sulphuric acid called vitriol?

Sulfuric acid was called ” oil of vitriol ” by medieval European alchemists because it was prepared by roasting “green vitriol ” (iron(II) sulfate) in an iron retort.

What is the chemical formula of sulfuric acid?

What is the chemical reaction of Sulphuric acid?

Water is added to the disulfuric acid, H2S2O7, to produce sulfuric acid, H2SO4 H2S2O7(l)+H2O(l) → 2H2SO4(l). The oxidation of sulfur dioxide to sulfur trioxide in step (3) above is an exothermic reaction (i.e., energy is released). Hence, a by-product of this process is steam.

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What is the chemical name of Sulphuric acid?

What is used in contact process?

Contact process, modern industrial method of producing sulfuric acid; it has largely replaced the chamber, or lead-chamber, process. Sulfur dioxide and oxygen, passed over a hot catalyst, unite to form sulfur trioxide, which in turn combines with water to make sulfuric acid.

Which catalyst is used in contact process of H2SO4?

V 2O5 ( vanadium pentaoxide) is used as a catalyst in the manufacture of H2SO4 by contact process since it is not easily poisoned.

Which catalyst is used in Deacon’s process?

In 1874, Henry Deacon had derived a process to reduce HCl emissions as mandated by the Alkali Act. In this process, hydrogen chloride is oxidized by oxygen over a copper chloride catalyst, resulting in the production of chlorine.

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