The observations of given experiments done by the aqueous solutions of Cu 2+ and Zn 2+ with Zn and Cu strips should be given. Concept introduction: Standard reduction potential E ° : The reduction potential of an electrode at 25°C Temperature ,1 atm Pressure and 1M Concentration is known as Standard reduction potential E ° (SRP). The higher positive SPR having species are oxidizes the lowest SRP containing species spontaneously. The less positive SPR having species are reduces the higher SRP containing species spontaneously.
The observations of given experiments done by the aqueous solutions of Cu 2+ and Zn 2+ with Zn and Cu strips should be given. Concept introduction: Standard reduction potential E ° : The reduction potential of an electrode at 25°C Temperature ,1 atm Pressure and 1M Concentration is known as Standard reduction potential E ° (SRP). The higher positive SPR having species are oxidizes the lowest SRP containing species spontaneously. The less positive SPR having species are reduces the higher SRP containing species spontaneously.
Solution Summary: The author explains that the standard reduction potential of Zn is E° (SRP). The higher positive SPR having species oxidizes the lowest SRP containing species spontaneously.
A student carries out the following experiments and records the following observations.
1. A few drops of a solution of KOH (aq) is added to a solution of Cu(NO3)2 (aq). A blue gelatinous solid forms immediately upon addition.
2. A few drops of a solution of KOH (aq) is added to a solution of NaNO3 (aq). No changes are observed.
3. A few drops of a solution of KOH (aq) is added to an unknown solution that could contain Cu2+(aq) and/or Na+(aq) ions (the solution could contain both ions, just one of the ions, or neither ions). A blue gelatinous solid forms immediately upon addition.
Select all of the answers that are consistent with the data from those 3 experiments.
Group of answer choices
The unknown contains Cu2+(aq) and Na+(aq)
The unknown contains Cu2+(aq)
The unknown contains Na+(aq)
The unknown contains neither Cu2+(aq) or Na+(aq)
A sample of 1.55g of iron ore is dissolved in a acid solution in which the iron is converted into Fe2+. The solution formed is the titration with KMnO4 which oxidises Fe2+ to Fe3+ while the MnO4 ions are reduced to Mn2+ ions.92.9 mL of 0.020 M KMnO4 is required for titration to reach equivalence point. Write the balanced equation for titration.
When solid Fe metal is put into an aqueous solution of NiSO4, solid Ni metal and a solution of FeSO4 result. Write the net ionic equation for the reaction.
(Use the solubility rules provided in the OWL Preparation Page to determine the solubility of compounds.)
Chapter 19 Solutions
OWLv2 for Ebbing/Gammon's General Chemistry, 11th Edition, [Instant Access], 1 term (6 months)
Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell