Prelab 367R

Prelab 367R - NO 3-Nitrate and nitrite ions do not react...

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KEY to PRELAB 367: The Chemistry And Qualitative Analysis of Anions 1. a. NO 2 - , SO 3 - b. SO 3 2- , CO 3 2- , PO 4 3- c. SO 3 2- , CO 3 2- , NO 2 - d. SO 3 2- , NO 3 - , NO 2 - e. NO 3 - , NO 2 - 2. acid-base and decomposition 3. The anion must be nitrate because it does not give precipitates with inorganic cations and does not release a gas when acid is added. 4. SO 4 2- Carbonate, phosphate and sulfate ions give white precipitates when mixed with barium ions. It is the lack of reaction upon addition of acid that confirms that the precipitate is barium sulfate.
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Unformatted text preview: NO 3-Nitrate and nitrite ions do not react with the barium ion solution. The lack of reaction upon addition of acid confirms that the solution contains only nitrate ion. 5. similar to the reaction of sulfite to sulfate, following eq. 18. 5 NO 2-(aq) + 2 MnO 4-(aq) + 6 H 3 O + (aq) 5 NO 3-(aq) + 2 Mn 2+ (aq) + 9 H 2 O...
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This note was uploaded on 02/21/2011 for the course CHEM 1280 taught by Professor Schmidt during the Fall '07 term at Toledo.

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