06ReportSheetsF2010

06ReportSheetsF2010 - Chem 1B Name: Date: Experiment 6...

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Unformatted text preview: Chem 1B Name: Date: Experiment 6 Report Reaction A: Effect of adding Acids and Bases Observations: a. After addition of HCl(aq) b. After addition of NaOH(aq) Questions: 2CrO 4 2- (aq) + 2H + (aq) ∏ Cr 2 O 7 2- (aq) + H 2 O( l ) (yellow) (orange) Use your observations to answer the following questions: 1. Adding HCl(aq) increases/decreases the concentration of ______________ and shifts the equilibrium in which direction? (use a single arrow to indicate direction) 2CrO 4 2- (aq) + 2H + (aq) Cr 2 O 7 2- (aq) + H 2 O( l ) 2. Adding NaOH(aq) increases/decreases the concentration of ________________ and shifts the equilibrium in which direction? (use a single arrow to indicate direction) 2CrO 4 2- (aq) + 2H + (aq) Cr 2 O 7 2- (aq) + H 2 O( l ) Reaction B: Precipitate Solubility by adding Acids and Bases Observations: a. After addition of HCl(aq) b. After addition of NaOH(aq) c. After addition of (NH 4 ) 2 C 2 O 4 (aq) Questions: 1. Write the net ionic equation for the reaction of barium chloride and ammonium oxalate. Barium oxalate can form an equilibrium to form hydrogen oxalate ion: BaC 2 O 4 (s) + H + (aq) ∏ Ba 2+ (aq) + HC 2 O 4 – (aq) (white ppt.) Use your observations to answer the following questions: 2. Adding HCl(aq) increases/decreases the concentration of ______________ and shifts the equilibrium in which direction? (use a single arrow to indicate direction) BaC 2 O 4 (s) + H + (aq) Ba 2+ (aq) + HC 2 O 4 – (aq) 3. Adding NaOH(aq) increases/decreases the concentration of ________________ and shifts the...
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This note was uploaded on 12/21/2010 for the course CHEM 1B taught by Professor Garyj.decicco during the Fall '10 term at Santa Rosa.

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06ReportSheetsF2010 - Chem 1B Name: Date: Experiment 6...

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