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प्रश्न
Sulphuric acid is manufactured by the contact process.
Give the conditions for the oxidation of SO2.
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उत्तर
- The optimum temperature should be as low as possible. The yield has been found to be maximum at about 410°C-450°C.
- We favour high pressure (2 atm) because the formed product 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 SO2 and one part of 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.
Sulphuric acid is manufactured by contact process.
what is the chemical used to dissolve SO3 and what is The product formed?
Why the impurity of arsenic oxide must be removed before passing the mixture of SO2 and air through the catalytic chamber?
Why is sulphuric acid used in the preparation of HCl and HNO3? Give equations in both cases.
What property of conc. H2SO4 is made use of in the following case? Give an equation for the reaction in this case:
In the production of HCl gas when it reacts with chloride.
Describe the theory of manufacture of sulphuric acid by contact process, with all the necessary conditions (No technical details are required but equations should be given for each stage of process).
Define the following term : Oleum
Choose the current answer from the options given below :
In the contact process, the impurities of arsenic are removed by
Fill in the blank with appropriate word/words :
The catalyst used in contact process for the manufacture of H2SO4 is ___________ or _________.
What is the purpose of the contact process?
