Asked by: Angel Heddergott
science chemistry

What is the contact process used for?

Last Updated: 24th June, 2020

23
The main purpose of the Contact Process is to make sulfur dioxide. First, you have to make sulfur dioxide, you then convert this into sulfur trioxide. The sulfur trioxide is then converted to fuming sulfuric acid. Sulfuric acid is a very important industrial chemical.

Click to see full answer.

Furthermore, what are the reaction conditions for the contact process?

The conditions needed for it are: a catalyst of vanadium(V) oxide, V 2O. a temperature of around 450°C. a pressure of approximately 2 atmospheres.

Subsequently, question is, who developed the contact process? Peregrine Phillips

Consequently, why v2o5 is used in contact process?

Vanadium oxide (V2O5) is used as catalyst in this reaction which increases the rate of reaction and reduces the need for a high temperature. In this step of the contact process, concentrated sulfuric acid is used to dissolve the sulfur trioxide which produces the oleum.

Is the contact process exothermic or endothermic?

In the Haber process, the forwards reaction is exothermic , so the reverse reaction is endothermic. This means that as the temperature is increased, the position of equilibrium moves to the left, and the yield of ammonia decreases.

Related Question Answers

Mengting Henek

Professional

Why is it called contact process?

According to this site: 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.

Lamberta Cleirich

Professional

What is the catalyst 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 (V2O5) is now preferred.

Guoqiang Unzurrunzaga

Professional

Why is so3 not added directly to water?

SO3 dissolution in water is extremely exothermic. This forces the sulfuric acid to form a mist of tiny droplets. These are highly corrosive which can even attack and corrode the lead pipelines and linings which cover the tower in contact process. Also, this mist does not condense so easily.

Kimberly Coteron

Explainer

How does contact process work?

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.

Stepanie Gehrigk

Explainer

How does a catalyst work?

The production of most industrially important chemicals involves catalysis. A catalyst works by providing an alternative reaction pathway to the reaction product. The rate of the reaction is increased as this alternative route has a lower activation energy than the reaction route not mediated by the catalyst.

Alta Stempfle

Explainer

Which substance removes As2O3 in contact process?

Tyndall Box Arsenic oxide is a poison for the catalyst. It is removed when the gas is passed over ferric hydroxide. As2O3 + 2Fe(OH)3 → 2FeAsO3 + 3H2O In order to remove traces of As2O3, it is passed through a test box, where a strong beam of light is thrown against the gas.

Alamgir Ajamil

Pundit

How is h2so4 prepared by contact process?

The steps involved in the manufacture of sulphuric acid by contact process are as shown: (1) Sulphur (or iron pyrites) are burnt in air to form sulphur dioxide. (2) Catalytic oxidation of sulphur dioxide to sulphur trioxide. (4) Oleum is diluted with water to form sulphuric acid of desired concentration.

Abderraman Cedeira

Pundit

What is s2ho4?

Chemical name of (H2SO4) is sulfuric acid also called oil of vitriol, or hydrogen sulphate. It is a very strong acid; Sulfuric acid is a colorless oily liquid. It is soluble in water with release of heat. one of the most familiar applications of sulfuric acid is- used as the electrolyte in lead–acid storage batteries.

Moses De Huerga

Pundit

Why h2so4 is used 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.

Odet Monsky

Pundit

Why is the contact process important?

The Contact Process is important because it plays a big role in manufacturing. The main purpose of the Contact Process is to make sulfur dioxide. First, you have to make sulfur dioxide, you then convert this into sulfur trioxide. The sulfur trioxide is then converted to fuming sulfuric acid.

Glennie Bellersen

Pundit

What are the limitations of contact process?

The major limitation of the contact process is that the purification of the air and sulphur dioxide (SO) is necessary to avoid catalyst poisoning (i.e. removing catalytic activities). It is overcome by trapping the SO.

Sherly Kocher

Teacher

How do you make Sulphuric acid?

Sulfuric acid is produced from sulfur, oxygen and water via the contact process. 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.

Edit Rahil

Teacher

How is oleum made in the contact process?

Oleum is produced in the contact process, where sulfur is oxidized to sulfur trioxide which is subsequently dissolved in concentrated sulfuric acid. Sulfuric acid itself is regenerated by dilution of part of the oleum.

Ion Pueblo

Teacher

When was the contact process invented?

The contact process was originally developed c. 1830 by Peregrine Phillips in England; it was little used until a need for concentrated acid arose, particularly for the manufacture of synthetic organic dyes.

Twana Haberecker

Teacher

Why does the contact process used low pressure?

This is because the reaction is exothermic such that a low temperature would favour the forward reaction and produce more sulphur trioxide. However, a low temperature slows down the rate of the reaction. Thus a compromise temperature of 450 oC is used. A pressure of only 1 atm is used.

Anny Alouat

Reviewer

What type of reaction is the Haber process?

The Haber Process combines nitrogen from the air with hydrogen derived mainly from natural gas (methane) into ammonia. The reaction is reversible and the production of ammonia is exothermic. The catalyst is actually slightly more complicated than pure iron.

Yerma Hanig

Reviewer

Is the Haber process expensive?

If the pressure is increased, the equilibrium position moves in the direction of the fewest molecules of gas. This means it moves to the right in the Haber process. However, it is expensive to achieve very high pressures.

Sherly Kloodt

Reviewer

How do Catalysts speed up reactions?

A catalyst increases the rate of the reaction because: They provide an alternative energy pathway that has a lower activation energy. This means that more particles have the activation energy required for the reaction to take place (compared to without the catalyst) and so the speed of the reaction increases.

Koldobike Gscheider

Reviewer

How does the diagram show that the reaction is endothermic?

Exothermic reactions can be represented on a reaction profile diagram: In endothermic reactions, the chemicals take in energy so ∆H is positive. The surroundings feel cooler and a decrease in temperature is observed.