Study the flow chart below and answer the questions that follow.

Study the flow chart below and answer the questions that follow.




a) Explain using 3 equations how Sulphur (IV) oxide is obtained in contact process.

b) State three identities of solid K.

c) Name two impurities present in the gaseous mixture and suggest how they can be eliminated.

d) Identify the catalyst used in the catalytic converter and state two reasons why it is preferred.

e) Explain why Sulphur (VI) oxide is not absorbed directly into water.

f) Write balanced chemical equations for the reactions taking place at:
i). The catalytic converter
ii). Absorption tower.
iii). Diluter

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a). S_(s) + O_2(g)-------> SO_2(g)

2Pbs_(s) + 3O_2(g)-------> 2PbO_(s) + 2 SO_2(g)


b) Sulphur
Lead (II) sulphide
Zinc sulphide

c) Dust particles
Arsenic compounds
They can be eliminated through electrostatic precipitation.

d) Vanadium (v) oxide
Reasons – not easily poisoned by impurities
It is cheap

e) The reaction is highly exothermic and produces hot misty fumes which are dangerous.

f) i). 2SO_2(g) +O_2(g)-------> 2 SO_3(g)

ii). SO_3(g) +H₂SO_4(aq)-----> H₂S₂O_7(L)

iii). H₂S₂O_7(L) + H₂O_(L)-----> 2H₂SO_4(L)

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maurice.mutuku answered the question on August 19, 2019 at 06:57

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