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Redox Reactions

A substance t...

Question

A substance that will oxidise aqueous Iron (II) ions to Iron (III) ions:

A

Chlorine

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B

Bromine

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C

Platinum

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D

oxygen

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Solution

The correct option is A Chlorine
When chlorine reacts with iron(II) ions in solution, chloride ions and iron(III) ions are produced.
Ionic equation:
$C l_{2} (g) + 2 F e^{2 +} (a q) \to 2 C l^{-} (a q) + 2 F e^{3 +} (a q)$
The equation shows that the $F e^{2 +}$ ions have formed $F e^{3 +}$ ions, i.e., each ion has lost an electron. This means the $F e^{2 +}$ ions have been oxidised.

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Fill in the blanks by choosing an appropriate option.
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