The following diagram will be used for questions 4-10. You might want to make a sketch of it. A voltaic cell is constructed using Zinc metal and silver metal electrodes . Solutions of silver nitrate and zinc nitrate also were used. From appendix 6 in your text the following reduction potentials (E are listed. Ag (aq) + 1 e --> Ag (s) 0.800 V Zn 2+ + 2 e- --> Zn (s) -0.762V Match the letters on the diagram to the correct substance. Zinc 2+ Calculate the voltage of the above cell if the [Zn] and [Ag ] are both 0.500M and the temperature is 298.15K ( answer to 3 decimal places) Answer:

The following diagram will be used for questions 4-10. You might want to make a sketch of it. A voltaic cell is constructed using Zinc metal and silver metal electrodes . Solutions of silver nitrate and zinc nitrate also were used. From appendix 6 in your text the following reduction potentials (E are listed. Ag (aq) + 1 e --> Ag (s) 0.800 V Zn 2+ + 2 e- --> Zn (s) -0.762V Match the letters on the diagram to the correct substance. Zinc 2+ Calculate the voltage of the above cell if the [Zn] and [Ag ] are both 0.500M and the temperature is 298.15K ( answer to 3 decimal places) Answer:

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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Designing a galvanic cell from tw... A chemist designs a galvanic cell that uses these two half-reactions: standard reduction |MnO4(aq)+2H₂O(l)+3e¯ → MnO₂(S)+4OH(aq) Cl₂(g) +2e 2 Cl(aq) Answer the following questions about this cell. Write a balanced equation for the half-reaction that 0 happens at the cathode. Write a balanced equation for the half-reaction that happens at the anode. Write a balanced equation for the overall reaction that powers the cell. Be sure the reaction is spontaneous as written. Do you have enough information to calculate the cell voltage under standard conditions? If you said it was possible to calculate the cell voltage, do so and enter your answer here. Round your answer to 2 significant digits. 0 half-reaction O Yes O No ☐v - potential Ered = +0.59 V = +1.359 V ロ→ロ X x10 S
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Questions 20 and 21 refer to the following information. Galvanic Cell Cell Diagram E°cell (Volts) Mg | Mg2(1.0 M) || Pb*2(1.0 M) | Pb 1 2.24 Zn | Zn(1.0 M) || Pb*2(1.0 M) | Pb 2 0.63 Mg | Mg*(1.0 M) || Zn*2(1.0 M) | Zn 3 The chemical reaction occurring in first galvanic cell is: Mg + Pb*2 → Mg+2 + Pb 21. If the concentration of Mg+2 is changed from 1.0 M to 3.0 M in the galvanic cells above, what will happen to the observed cell voltages in galvanic cells 1 and 3? (A) The voltage in both galvanic cells 1 and 3 will increase. (B) The voltage will decrease in both galvanic cells 1 and 3. (C) The voltage in galvanic cell 1 will increase and will decrease in galvanic cell 3 (D) The voltage in galvanic cell 3 will increase and will decrease in galvanic cell 1. 22. Consider a voltaic cell based on these half-cells. Ag (aq) +e → Ag/s) Cd (aq) + 2e → Cd¢s) E* = +0.80 V E = -0.40 V Identify the anode and give the voltage of this cell under standard conditions. (A) Ag; Ecell = 0.40 V (B) Ag;…
5. Consider the following under acidic conditions: Cu(s) + MnO4¹ (aq) → Mn²+ + Cu²+ i ii Write the balanced half-reaction for the oxidation that occurs. Write the balanced half-reaction for the reduction that occurs. iii Write the balanced redox reaction. iv Write the potential for each half-reaction next to it (the values are in your text) V Calculate the cell potential. vi Calculate AG at 25 °C. vii Is this reaction spontaneous? Why? viii Draw and label the cell for this reaction. ix Write the line notation for the cell.
A galvanic (voltaic) cell consists of an electrode composed of nickel in a 1.0 M nickel(II) ion solution and another electrode composed of gold in a 1.0 M gold(III) ion solution, connected by a salt bridge. Calculate the standard potential for this cell at 25 °C. Refer to the list of standard reduction potentials. V 'cell II
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A galvanic (voltaic) cell consists of an electrode composed of nickel in a 1.0 M nickel(II) ion solution and another electrode composed of copper in a 1.0 M copper(I) ion solution, connected by a salt bridge. Calculate the standard potential for this cell at 25 °C. Refer to the list of standard reduction potentials. E cell || = V
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