Two questions

1.Using the chemistry data sheet, explain why sulfuric acid should not
be used in the preparation of a KMnO4 solution that is to be
standardized.  Include appropriate redox equations.

2. After having attained the expected pink endpoint in a permanganate
titration, a student observes that the solution changes color,
depositing a brown solid in the titration flask.  Using the chemistry
data sheet, explain what has occurred.  Include appropriate redox
equations.

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Clarification of Question by princess2-ga on 13 Feb 2003 11:16 PST

I need the answer to these questions by the end of today.  Can you
please let me know if this is possible?

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Clarification of Question by princess2-ga on 13 Feb 2003 15:40 PST

I don't think I will have the answer in time, so I would like to
withdraw my request.  Please do not charge me for this.