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JAMB Chemistry 1988 Question 33

Question 33

Sulphur and its Compounds

In the reaction C6H10O5(s) → 6C(s) + 5H2O (conc. H2SO4), concentrated H2SO4 is acting as

  1. A.a reducing agent
  2. B.an oxidizing agent
  3. C.a dehydrating agent
  4. D.a catalyst.
Show the answer and explanation

Answer: C (a dehydrating agent)

Explanation

The acid removes the elements of water (H and O in a 2 : 1 ratio) from the carbohydrate, leaving carbon. That is dehydration.