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प्रश्न
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).
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उत्तर
The theory of manufacture of sulphuric acid by contact process involves following steps:
i. Production of SO2 : SO2 is produced by burning sulphur or roasting iron pyrites.
S + O2 → SO2 Or
4FeS2 + 11O2 → 2Fe2O3 + 8SO2
ii. Catalytic oxidation of SO2 by air to give sulphur trioxide:
2SO2 + O2 ⇌ 2SO3 + Heat
iii. Absorption of sulphur trioxide in 98% sulphuric acid to form oleum:
SO3 + H2SO4 → H2S2O7
iv. Dilution of oleum to get sulphuric acid of desired concentration:
H2S2O7 + H2O → 2H2SO4
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संबंधित प्रश्न
Sulphuric acid is manufactured by the contact process.
Give two balanced equations to obtain SO2 in this process.
Sulphuric acid is manufactured by the contact process.
Give the conditions for the oxidation of SO2.
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 SO2 and air through the catalytic chamber?
What property of conc. H2SO4 is made use of in the following case? Give an equation for the reaction in this case:
In the preparation of CO and HCOOH.
What property of conc. H2SO4 is made use of in the following case? Give an equation for the reaction in this case:
As a source of hydrogen by diluting it and adding a strip of magnesium.
What property of conc. \[\ce{H2SO4}\] is made use of the following case? Give an equation for the reaction in given case:
hydrogen sulphide gas is passed through concentrated sulphuric acid.
Name the following:
The catalyst used in the constant process.
Choose the current answer from the options given below :
In the contact process, the impurities of arsenic are removed by
Name the process used for the large scale manufacture of sulphuric acid.
