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Chem 2A Lab #2 free response

Chem 2A Lab #2 free response - magnesium nitrate reacted...

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In the box provided, provide a cohesive summary of the reactions you undertook and the observations you made in this laboratory session. If you did not obtain a perfect score on your unknown, explain what error in procedure or observation you might have made that resulted in a false conclusion. The following is a list of reactions that occurred: silver nitrate reacted with hydrochloric acid to form a milky white precipitate, ammonium hydroxide to form a cloudy, brown precipitate and sodium hydroxide to form a light brownish precipitate; strontium nitrate reacted with sulfuric acid to form a solid white precipitate and sodium hydroxide to form a light brownish precipitate;
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Unformatted text preview: magnesium nitrate reacted with ammonium hydroxide to form a rusty yellow, cloudy precipitate and sodium hydroxide to form a brownish yellow semi-solid precipitate; and aluminum nitrate reacted with ammonium hydroxide to form a bluish-white misty precipitate and sodium hydroxide to form a whitish cloudy precipitate, however adding more sodium hydroxide made the precipitate disappear. One possible reason why I did not receive a perfect score on the unknown was because we dripped the solution into the test tube too quickly, and a precipitate could have formed and disappeared within that time. Another, though unlikely, was because we mixed up the order of the solutions....
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