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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).
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 \[\ce{SO2}\] in this process.
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:
As a source of hydrogen by diluting it and adding a strip of magnesium.
Define the following term:
Constant boiling mixture
Name the following:
The catalyst used in the constant process.
Choose the current answer from the options given below :
In the preparation of H2SO4 by contact process V2O3 is used as a catalyst in the reaction. It is
Write the equation for the reaction between zinc and the final product of the contact process.
With the help of equations, give an outline for the manufacture of sulphuric acid by the contact process.
In the contact process for the manufacture of sulphuric acid give the equations for the conversion of sulphur trioxide to sulphuric acid.
