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3 marksSulfuric Acid

CAPE Chemistry Unit 2 · 2015 · Paper 2 · Question 3(a)

Sulfuric acid is manufactured by the Contact Process, where the slowest step is 2 SO2 (g) + O2 (g) <=> 2 SO3 (g), ΔH = -197 kJ mol^-1.

List the THREE ways in which the rate of SO3 production can be improved.

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Other parts of this question

  1. 3(b)(i)State Le Chatelier's principle.[1 mark]
  2. 3(b)(ii)State the general conditions of temperature and pressure predicted by Le Chatelier's principle to obtain the MAXIMUM yield of SO3.[2 marks]
  3. 3(b)(iii)Describe how the sulfur trioxide produced is converted to concentrated sulfuric acid.[2 marks]
  4. 3(b)(iv)Write TWO equations to represent the process described in (b)(iii).[4 marks]
  5. 3(b)(v)Outline the safety considerations that guide the process in (b)(iii).[3 marks]

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