Why h2so4 is used in contact process?
H2SO4 (l) + SO3 (g) → H2S2O7 (l) Note that directly dissolving SO3 in water is impractical due to the highly exothermic nature of the reaction. Acidic vapor or mists are formed instead of a liquid. Oleum is reacted with water to form concentrated H2SO4.
What is the principle of 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.
What are the two stages in contact process?
The Contact Process: makes sulphur dioxide; converts the sulphur dioxide into sulphur trioxide (the reversible reaction at the heart of the process); converts the sulphur trioxide into concentrated sulphuric acid.
Which catalyst is used in Ostwald process?
The Ostwald process is used to produce nitric acid. Ammonia is the feedstock for this reaction. It is reacted with oxygen and water using a platinum catalyst to produce nitric acid.
What is the principle of Ostwald process?
The Principle and Mechanism Behind Ostwald’s Process The conversion of ammonia to nitric acid simply occurs as a result of oxidation. This particular oxidation reaction gives us the corresponding nitric oxide. Further, when the nitric oxide is oxidized nitrous gases are formed and those gases can trap water molecule.
What type of reaction is the Ostwald process?
The Ostwald Process reaction is exothermic so external heat can be removed when the reaction gets started. In the Ostwald process nitrogen monoxide is initially formed then nitrogen dioxide dissolves in water. The reaction of nitric acid with ammonia to make ammonium nitrate is an example of a neutralisation reaction.
How ammonia is used in Ostwald process?
…developed by the German chemist Wilhelm Ostwald in 1901, ammonia gas is successively oxidized to nitric oxide and nitrogen dioxide by air or oxygen in the presence of a platinum gauze catalyst. The nitrogen dioxide is absorbed in water to form nitric acid.
Is Ostwald process reversible?
Ostwald Process for making Nitric Acid: Oxidization of ammonia is a reversible and exothermic process.
Which oxidising agent is used in Ostwald process?
oxygen