Exploring Redox Reactions: Ionic Equations and Observations
School
Westminster High School**We aren't endorsed by this school
Course
CHEMISTRY CHEMISTRY
Subject
Chemistry
Date
Dec 12, 2024
Pages
3
Uploaded by CoachRose18151
Redox LabPurpose: To witness various redox reactions. Students will practice making net ionic equations and findingthe products of the redox reactions with phases.Materials: Magnesium, Aluminum, Zinc, Tin, Copper (II) Sulfate, Nickel (II) Nitrate, Lead (II) Acetate, SilverNitrate, Iron (III) Chloride, 50mL beakersReactions:#1Calcium + Iron II Nitrate→#2Magnesium + Cobalt II Chloride→#3Calcium + Silver I Nitrate→#4Aluminum + Copper II Sulfate + HCl→a) Aluminum + Copper II Sulfate→b) Aluminum + HCl→#5Calcium + Tin II Chloride→Procedure:1: Obtain a small sample of metal for the first reaction (magnesium).2: Measure out a small volume of solution #1 (copper II nitrate) with a graduatedcylinder and transfer to a small beaker.3. Add the solid to the measured solution and observe. Mark observations accordingly.4. Make the redox half reactions and the net ionic equation for the reactions.5 . Create balanced formula equations and phases for the reaction.6. Repeat steps 1-5 with reactions #2 through #6.7. Dump all samples in the waste container.8. Rinse out and return all glassware and clean up your table please.Results:A. List all observations:.Reaction 1: Color of reactants before mixing: _______________ Temp of reactants before mixing: ______________Reaction 1: Color of products after mixing: ______________Temp/Bubbles of solution after mixing: ___________Reaction 2: Color of reactants before mixing: ________________Temp of reactants before mixing: ______________Reaction 2: Color of products after mixing: ________________Temp/Bubbles of solution after mixing: _________Reaction 3: Color of reactants before mixing: ________________Temp of reactants before mixing: ______________Reaction 3: Color of products after mixing: ________________Temp/Bubbles of solution after mixing: __________Reaction 4: Color of reactants before mixing: ________________Temp of reactants before mixing: ______________Reaction 4: Color of products after mixing: ________________Temp/Bubbles of solution after mixing: __________Reaction 5: Color of reactants before mixing: ________________Temp of reactants before mixing: ______________clear25 degreesclear27 degreesyelloworangeclearmuddy browncleargrayish clearlight gray20 degrees25 degrees25 degrees25 degrees26 degrees24 degrees24 degrees
Reaction 5: Color of products after mixing: ________________Temp/Bubbles of solution after mixing: __________Reaction 6: Color of reactants before mixing: ________________Temp of reactants before mixing: ______________Reaction 6: Color of products after mixing: ________________Temp/Bubbles of solution after mixing: __________B. List the oxidation and reduction half reactions for each reaction:Rxn 1: oxidation ½ reaction: ________________________________reduction ½ reaction: _________________________________Rxn 2: oxidation ½ reaction: ________________________________reduction ½ reaction: _________________________________Rxn 3: oxidation ½ reaction: ________________________________reduction ½ reaction: _________________________________Rxn 4: oxidation ½ reaction: ________________________________reduction ½ reaction: _________________________________Rxn 5: oxidation ½ reaction: ________________________________reduction ½ reaction: _________________________________Rxn 6: oxidation ½ reaction: ________________________________reduction ½ reaction: _________________________________C. List all net ionic equations:Rxn 1: Net Ionic Equation: _______________________________________________________________Rxn 2: Net Ionic Equation: _______________________________________________________________Rxn 3: Net Ionic Equation: _______________________________________________________________Rxn 4: Net Ionic Equation: _______________________________________________________________Rxn 5: Net Ionic Equation: _______________________________________________________________Rxn 6: Net Ionic Equation: _______________________________________________________________D. List all balanced equations with phases:Rxn 1: Balanced Equation: ______________________________________________________________________________________Rxn 2: Balanced Equation: ______________________________________________________________________________________Rxn 3: Balanced Equation: ______________________________________________________________________________________Rxn 4: Balanced Equation: ______________________________________________________________________________________Rxn 5: Balanced Equation: ______________________________________________________________________________________Rxn 6: Balanced Equation: ______________________________________________________________________________________Conclusion:1.Conclusion can be bullet points in your lab journal.2.Conclusion must be in paragraph form when submitting a report.3.Conclusion should restate the purpose of the lab.white graydirty yellowdirty white27 degrees23 degrees28 degreesCa + Fe²⁺→Ca²⁺+ FeMg + Co²⁺→Mg²⁺+ CoCa + 2Ag⁺→Ca²⁺+ 2Ag2Al + 3Cu²⁺→2Al³⁺+ 3Cu2Al + 6H⁺→2Al³⁺+ 3H₂Ca + Sn²⁺→Ca²⁺+ SnCa→Ca²⁺+ 2e⁻Fe²⁺+ 2e⁻→FeMg→Mg²⁺+ 2e⁻Co²⁺+ 2e⁻→CoCa→Ca²⁺+ 2e⁻Ag⁺+ e⁻→AgAl→Al³⁺+ 3e⁻Cu²⁺+ 2e⁻→CuAl→Al³⁺+ 3e⁻H⁺+ e⁻→H₂Ca→Ca²⁺+ 2e⁻Sn²⁺+ 2e⁻→SnCa (s) + Fe(NO₃)₂(aq)→Ca(NO₃)₂(aq) + Fe (s)Mg (s) + CoCl₂(aq)→MgCl₂(aq) + Co (s)Ca (s) + 2AgNO₃(aq)→Ca(NO₃)₂(aq) + 2Ag (s)2Al (s) + 3CuSO₄(aq)→Al₂(SO₄)₃(aq) + 3Cu (s)2Al (s) + 6HCl (aq)→2AlCl₃(aq) + 3H₂(g)Ca (s) + SnCl₂(aq)→CaCl₂(aq) + Sn (s)
4.Conclusion for this lab should report which reactions worked or not.5.Conclusion for this lab should evaluate why each reaction worked correctly or why it did not.The purpose of this experiment was to observe various redox reactions, make net ionic equations, andidentify the products with their respective phases. Most reactions proceeded as expected, forming thepredicted products. However, some reactions showed deviations possibly due to inaccuracies in measurements or impurities in reactants. For instance, the yellow coloration in Reaction 4 indicated the presence of impurities. Overall, the lab successfully demonstrated the principles of redox reactions and highlighted areas for improved experimental procedures.