Oxidation of sulphur dioxide into sulphur trioxide in the absence of a catalyst is a slow process but this oxidation occurs easily in the atmosphere. Which substance here catalyse the reaction?

Oxygen

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Solution

The correct option is C Oxygen
oxidation of $S O_{2}$ to $S O_{3}$ in the atmosphere occurs easily because of the presence of $O_{2}$ in the atmosphere; excess of which ensure the reaction to get completed.

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Which catalyst is used in the contact process to convert sulphur dioxide into sulphur trioxide?

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Q. Oxidation of Sulphur to Sulphur trioxide is thermodynamically more favourable than oxidation of Sulphur to Sulphur dioxide – true or false?

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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Oxidation of sulphur dioxide into sulphur trioxide in the absence of a catalyst is a slow process but this oxidation occurs easily in the atmosphere. Which substance here catalyse the reaction?

The correct option is C Oxygenoxidation of SO2 to SO3 in the atmosphere occurs easily because of the presence of O2 in the atmosphere; excess of which ensure the reaction to get completed.

The correct option is C Oxygen
oxidation of $S O_{2}$ to $S O_{3}$ in the atmosphere occurs easily because of the presence of $O_{2}$ in the atmosphere; excess of which ensure the reaction to get completed.