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प्रश्न
Sulphuric acid is manufactured by the contact process.
Give the conditions for the oxidation of \[\ce{SO2}\]
उत्तर
- The optimum temperature should be as low as possible. The yield has been found to be maximum at about 410°C-450°C.
- High pressure (2 atm) is favoured because the product formed has less volume than the reactant.
- Excess oxygen increases the production of sulphur trioxide.
- Vanadium pentoxide, or platinised asbestos, is used as a catalyst.
- Concentration of Reactants.
- A pure and dry mixture of two parts of \[\ce{SO2}\] and one part of \[\ce{O2}\] by vol. is used.
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संबंधित प्रश्न
Sulphuric acid is manufactured by contact process.
why is Sulphuric acid not obtained directly by reacting SO3 with water.
Why the impurity of arsenic oxide must be removed before passing the mixture of \[\ce{SO2}\] and air through the catalytic chamber?
Why is sulphuric acid used in the preparation of \[\ce{HCl}\] and \[\ce{HNO3}\]? Give equations in both cases.
What property of conc. \[\ce{H2SO4}\] is made use of the following case? Give an equation for the reaction on the same:
In the production of \[\ce{HCl}\] gas when it reacts with chloride.
What property of conc. \[\ce{H2SO4}\] is made use of the following case? Give an equation for the reaction on the same:
In the preparation of sulphur dioxide by warming a mixture of conc. sulphuric acid and copper–turnings.
Define the following term:
Constant boiling mixture
Choose the current answer from the options given below :
In the contact process, the impurities of arsenic are removed by
What is the purpose of the contact process?
Write balanced equations for the three chemical reactions that take place during the conversion of sulphur dioxide to sulphuric acid in the contact process. Name the catalyst used in the contact process.
Name the process used for the large scale manufacture of sulphuric acid.
