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The oxidation number of sulphur in Fe2(SO4)3 is

Chemistry
WAEC 2014
The oxidation number of sulphur in Fe2(SO4)3 is
  • A. +2.
  • B. +3
  • C. +4.
  • D. +6.
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Correct Answer: Option D
Explanation
Fe2(SO4)3 = 0
(+3 x 2) 9 3x + (-2 x 4 x 3) = 0
+6 + 3x -24 = 0
+3x - 18 = 0
3 x = 18
x = 18/3 = +6
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