What is the first step involved in forming sulphuric acid through contact process?

Conversion of

S O_{2}

S O_{3}

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Burning of sulphur or roasting sulphide ores to generate

S O_{2}

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Absorption of

S O_{3}

in sulphuric acid

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Purifying

S O_{3}

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Solution

The correct option is B Burning of sulphur or roasting sulphide ores to generate $S O_{2}$
The first step involved in forming sulphuric acid through contact process is burning of sulphur or roasting sulphides ores to generate $S O_{2}$ .
$S + O_{2} \to S O_{2}$
Sulphur dioxide is purified by removing dust and arsenic impurities.

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Similar questions

Q. Manufacture of sulphuric acid by contact process involves dissolution of

S O_{3}

H_{2} S O_{4}

and not in water. Justify.

Q. Discuss the theory involved in the manufacture of sulphuric acid by contact process.

In the contact process, $S O_{3}$ is dissolved in concentrated Sulphuric acid to produce:

Q. (a) Name the catalyst which helps in the conversion of sulphur dioxide to sulphur trioxide in step C.
(b) In the Contact process for the manufacture of the sulphuric acid, sulphur trioxide is not converted to sulphuric acid by reacting it with water. Instead, a two-steps procedure is used. Write the equations for the two steps involved in D.
(c) What type of substance will liberate sulphur dioxide from sodium sulphite to step E?
(d) Write the equation for the reaction by which sulphur dioxide is converted to sodium sulphite in step F.
[5 MARKS]

(i) Name the catalyst which helps in the conversion of sulphur dioxide to sulphur trioxide in step C.
(ii) In the contact process for the manufacture of sulphuric acid, sulphur trioxide is not converted to sulphuric acid by reacting it with water. Instead a two-step procedure is used. Write the equations for the two step involved in D.
(iii) What type of substance will liberate sulphur dioxide from sodium sulphite in step E?
(iv) Write the equation for the reaction by which sulphur dioxide is converted to sodium sulphite in step F?

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