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Question 1

Vanadium(V) oxide acts as a catalyst in the oxidation of sulfur dioxide in the Contact process.

a)

State the meaning of the term heterogeneous as applied to catalysts.

(0/1 marks)

b)

Give two equations to describe how V2O5 acts as a catalyst in this process.

(0/2 marks)

c)

Explain why V2O5 can be described as a catalyst in this reaction.

(0/1 marks)

d)

Fe2+ ions catalyse the reaction between iodide and peroxodisulfate ions:

S2O82-(aq) + 2I-(aq) ➔ 2SO42-(aq) + I2(aq)

Explain what type of catalysis is occuring this reaction.

(0/2 marks)

0

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6

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