Experiment 10 part II

Experiment 10 part II - 4 2 BaCl 2 → BaSO 4 white ppt 2...

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Recitation April 3 1 QUALITATIVE ANALYSIS OF ANIONS Check for updates April 17 – Review April 24 – Exam #2
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Recitation April 3 2 Test for SO 4 2- , NO 3 - , CO 3 2- , Cl - , Br - , and I - A. Cold sulfuric acid test: SO 4 2- + H 2 SO 4 conc → no reaction NO 3 - + H 2 SO 4 conc → no reaction CO 3 2- + H 2 SO 4 conc → H 2 O ( ) + CO 2 (g) + SO 4 2- aq odorless - colorless gas Cl - + H 2 SO 4 conc → HCl (g) + HSO 4 - 2 Br- + H 2 SO 4 conc → Br 2 (g) + SO 2 (g) + 2 H 2 O ( ) [+ HBr (g) ] 2 I - + H 2 SO 4 conc → I 2 (g) + SO 2 (g) + 2 H 2 O ( ) [+ HI (g)] no redox reaction with Cl-
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Recitation April 3 3 Sulfate test: SO
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Unformatted text preview: 4 2-+ BaCl 2 → BaSO 4 ( white ppt ) + 2 Cl-Nitrate test: 2 NO 3-+ 6 FeSO 4 + 4 H 2 SO 4 → 3 Fe 2 (SO 4 ) 3 aq + 2 NO (g) +4 H 2 O ( ) + SO 4 2-NO (g) + Fe 2+ excess → Fe(NO) 2+ brown Chloride test: Cl- + AgNO 3 → AgCl ( white ppt ) Carbonate: CO 3 2-+ H 2 SO 4 → CO 2 (g) + H 2 O ( ) CO 2 (g) + Ba(OH) 2 → BaCO 3 ( white ppt ) + H 2 O ( ) B. Hot concentrated sulfuric acid test. 4 NO 3-+ H 2 SO 4 conc → 4 NO 2 (g) + O 2 (g) + 2 H 2 O ( ) The only reaction that will show a change. C. Four specific tests...
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This note was uploaded on 05/01/2011 for the course CHEM 112 taught by Professor Hibbard during the Spring '08 term at Spelman.

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Experiment 10 part II - 4 2 BaCl 2 → BaSO 4 white ppt 2...

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