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When H\(_2\)S is passed into a solution of iron (III) chloride, the solution turns

Chemistry
JAMB 2002

When H\(_2\)S is passed into a solution of iron (III) chloride, the solution turns

  • A. Pale green
  • B. Pale red
  • C. Brown
  • D. Colourless
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Correct Answer: Option A
Explanation

A reaction between Iron (iii) chloride and Hydrogen sulphide leads to the reaction

2FeCl\(_3\)(aq) + H\(_2\)S(g) → 2FeCl\(_2\)(aq) + 2HCl(aq) + S(s)

The colour change is from REDDISH BROWN to PALE GREEN.

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