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JAMB Chemistry 1983 Question 21

Question 21

Sulphur and its Compounds

A piece of burning sulphur will continue to burn in a gas jar of oxygen to give misty fumes which readily dissolve in water. The resulting liquid is

  1. A.sulphur (VI) trioxide
  2. B.tetraoxosulphate (VI) acid
  3. C.trioxosulphate (IV) acid
  4. D.dioxosulphate (II) acid
  5. E.hydrogen sulphide
Show the answer and explanation

Answer: C (trioxosulphate (IV) acid)

Explanation

Sulphur burns in oxygen mainly to sulphur(IV) oxide, which dissolves in water to form trioxosulphate(IV) acid (sulphurous acid), H2SO3.