1.2.3.Assign oxidation numbers to the following compounds:a. KCIO3b. NO₁₂C. CH, CHOBalance the following half-reaction in an acidic solution:Cr₂O₂2-→>> Cr3+Balance the following reaction in a basic solution:I- + MnO² -> MnO2 + 12 4. Build a voltaic cell with one beaker containing a solution of nickel (II) nitrate - Ni(NO3)2- with a nickel electrode, and a second beaker containing a solution of zinc chloride -ZnCl2 - with a zinc electrode.a. The half reactionsb. Flow of electronsc. Short-form notationd. Electric potential (voltage)

1. Assign Oxidation NumbersKCIO:To assign oxidation numbers in KCIO, we start by knowing that…

Answered: 1. 2. 3. Assign oxidation numbers to…

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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The following are metal pairs representing electrodes in theoretical voltaic cells. Which pair is incorrectly labeled? a. Cu, reduced/ Pb, oxidized b. Ni, reduced/ Al, oxidized c. Na, oxidized/ Mg, reduced d. Ag, oxidized/Au, reduced O e. Ag, oxidized/ Cu, reduced
Suppose a battery is constructed with all of the concentrations of aqueous ions at 1M and the partial pressures at 1 atm. What is the voltage of this cell? A. Eº B. E cell C.0 cell
How many minutes will it take to plate out 4.56 g of Ni metal from a solution of Ni2+ using a current of 55.5 A in an electrolytic cell? A. 2.25 B. 270 C. 9.50 D. 135 E. 4.50
19. The following choices are primary batteries, along with their metal electrodes stated in parenthesis. Which of the following primary batteries will produce the most electrical energy if all the batteries stated are used for an hour? You can refer to the electrochemical series to determine the number of electrons produced by the metal substance. Assume all half-cell reactions are spontaneous. a. Aluminum-zinc battery b. Calcium-lead battery, c. Potassium-sodium battery d. Calcium-zinc battery
3. Silver button batteries used in calculators is an example of a A. electrolytic cell B. fuel cell C. primary cell D. secondary cell 4. What type of cell requires a constant, external supply of reactants? A. secondary cell B. primary cell C. fuel cell D. electrolytic cell 5. The car battery is an example of a A. electrolytic cell B. fuel cell C. primary cell D. secondary cell
1.Represent in the conventional manner, i.e., anode/cathode, the voltaic cell in which each of the following reactions occur spontaneously. A. Zn + Ni2* → Zn2* + Ni B. 2AI + 3CI2 → 2AICI3 С. Н2 + 2Ag* → 2H* +2Ag D. 2H* + Pb → H2 Pb2+ + 2. Write the half reactions occurring at the cathode and at the anode when each cell shown in problem #1 is delivering current. 3. Calculate the voltage of the cell shown in problem #1.
1.Ca metal is produced by electrolysis of __________. a.CaCl2 b.CaSO4 c.CaF2 d.CaCO3 2.Which hydroxide of group 1 metal is the LEAST soluble? a.KOH b.LiOH c.CsOH d.NaOH
B. Redox reaction 24. Which of the following refers to a hypothetical reaction that shows only the oxidation or reduction reaction? A. Addition Reaction C. Endothermic reaction 25. What part of the electrochemical cell allows ions to flow back and forth so that charge does not build up? B. Cathode C. Motor A. Anode D. Half-reaction D. Salt bridge
‏choose the best answer
The mostly familiar known .37 standard cell is Fuel cell .A B. Le Clanche C. Electrolytic cell D. Weston Cell O O A
5. When the oxidation and reduction half reactions are carried out in separate compartments connected by a salt bridge, we have formed A. a voltaic cell B. an electrolytic cell D. a Daniell cell C. a heat exchanger E. none of these 7. A true statement among these is A. oxidation is a gain of electrons B. An oxidizing agent is oxidized during the redox reaction C. Electrons flow from the reducing agent to the oxidizing agent during redox reaction D. A reducing agent is reduced during the redox reaction E. none of the above 8. The voltage of the cell is/are: A. sum of two half-cell reactions B. sum of half-cell potentials C. determined by the absolute value of a single half-cell D. All of these E. none of these

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