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JAMB Chemistry 2007 Question 24

Question 24

Redox Reactions

The oxidation state of oxygen in tetraoxosulphate (VI) acid is

  1. A.− 4
  2. B.− 2
  3. C.+ 4
  4. D.− 8.
Show the answer and explanation

Answer: B (− 2)

Explanation

Oxygen in H2SO4 has its usual oxidation state of −2: 2(+1) + 6 + 4(−2) = 0.