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Asked Dec 9, 2019
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When a solution of iron (III) is mixed with an iodide solution (e.g. KI), the resulting solution turns to a dark red-brown color, and a light vapor deposit of a similar color is sometimes observed around the puddle. Explain what is occuring in this system. 

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When a solution of iron (III) is mixed with an iodide sol...

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Fe3+ (aq) + 2 I- (aq) → Fe2* (aq) + I2 (aq)

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