Chemistry
10th Edition
ISBN: 9781305957404
Author: Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher: Cengage Learning
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A voltaic cell is constructed with one cell consisting of an Cd electrode in 1.0 M Cd 2+ and another cell with an Sn electrode in 1.0 M Sn 2+. When this cell operates, the Cd electrode loses mass and the Sn electrode gains mass. Which of the following represents the reaction that occurs at the negative electrode of this cell?
| a. |
Cd ® Cd2+ + 2e-
|
|
| b. |
Sn2+ ® Sn4+ + 2e-
|
|
| c. |
Cd2+ + 2e- ® Cd
|
|
| d. |
Sn ® Sn2+ + 2e-
|
|
| e. |
Sn2+ + 2e- ® Sn
|
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- 4. Consider the voltaic cell: Pb(s) Cla(g) Salt bridge containing NANO;(aq) -1M Pb+ 1M C a. Determine the direction of electron flow and label the anode and the cathode. b. Write a balanced equation for the overall reaction and calculate Ee c. Label each electrode as negative or positive. d. Indicate the direction of anion and cation flow in the salt bridge.arrow_forwardGiven the following electrochemical cell, from which of the listed compounds or elements is the anode made? Cu(s) | Cu2+(aq) || Ag+(aq) | Ag(s) Select one: a. Cu2+(aq) b. Ag(s) c. Ag+(aq) d. Cu(s)arrow_forwardSingle bonded alkanes react by which method? a) addition b) synthesis c) replacement d) substitutionarrow_forward
- Use the cell notation to answer the question: Pt(s) | Sn2+(aq), Sn4+(aq) || Ag+(aq) | Ag(s) What element represents the cathode in the cell notation? A. Pt(s) B. Sn2+(aq) C. Sn4+(aq) D. +(aq) E. Ag(s)arrow_forward11. The following two half-cells are connected to form a full Galvanic cell: Cu"(aq) +2e Au (aq) +e → Cu(s) → Au(s) E° = 0.34 V E 1.69 V a. Calculate E° for the cell. b. Give the cell notation for this system. c. Give the balanced cell reaction. d. Calculate AG for the reaction e. Calculate Keg for the reaction. £. Calculate the cell potential if the activity of Cu is 0.0100 and the activity of Au" is 1.340.arrow_forwardConsider the cell diagram: Pb(s)|Pb(NO3)2(aq)||FeCl3(aq)|Fe(s). Write the balanced net-ionic equations for the half-reactions that occur at the two electrodes. a. Anode= b. Cathode=arrow_forward
- What statement about a galvanic cell constructed with Cut/Cu and Fe2+/Fe is correct? Standard Reduction Potentials E°red / V Cu* + e→ Cu +0.52 Fe2* + 2e-→ Fe -0.44 а. Fe(s) will reduce Cu*(aq). b. Fe(s) is a stronger oxidizing agent than Cu(s). С. The standard cell potential (E°cell) is +1.40 V. d. Fe<+(aq) is reduced at the cathode.arrow_forwardA Zn/Zn^2+ concentration cell has a voltage of 0.078 V at 25 deg C. The concentration of Zn ^2 + in the cathode is 5.2 x 10^-3 mol L-1 What is the concentration of Zn ^2+ in the anode?arrow_forward
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