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5 marksReactions of Carbon Compounds

CSEC Chemistry · January 2016 · Paper 2 · Question 5(d)(i)

Two unlabelled flasks contain pentane and butanoic acid. Dilute sodium hydroxide is added to each to determine their identities.

Write an equation, using FULLY displayed structures, which summarizes the expected reactions in EACH case. Identify any products formed.

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Other parts of this question

  1. 5(a)State ONE natural source of hydrocarbons.[1 mark]
  2. 5(b)List TWO other fractions that can be obtained and state ONE use of EACH fraction.[4 marks]
  3. 5(c)(i)Define the term 'cracking'.[1 mark]
  4. 5(c)(ii)How does catalytic cracking differ from thermal cracking?[2 marks]
  5. 5(d)(ii)Write a balanced chemical equation for the complete combustion of pentane.[2 marks]

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