(a)
Interpretation:
Anode in cell formed when
Concept Introduction:
Galvanic cell represents
(b)
Interpretation:
Cathode in cell formed when
Concept Introduction:
Refer to part (a).
(c)
Interpretation:
Place of oxidation in cell formed when
Concept Introduction:
Refer to part (a).
(d)
Interpretation:
Place of reduction in cell formed when
Concept Introduction:
Refer to part (a).
(e)
Interpretation:
Direction of flow of electrons in wire of cell formed when
Concept Introduction:
Refer to part (a).
(e)
Interpretation:
Direction of flow of electrons in solution of cell formed when
Concept Introduction:
Refer to part (a).
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FOUNDATIONS OF COLLEGE CHEM +KNEWTONALTA
- A factory wants to produce 1.00 103 kg barium from the electrolysis of molten barium chloride. What current must be applied for 4.00 h to accomplish this?arrow_forward. In which direction do electrons flow in a galvanic cell, from anode to cathode or vice versa?arrow_forwardElectrochemical Cells II Consider this cell running under standard conditions: Ni(s)Ni2(aq)Cu+(aq)Cu(s) a Is this cell a voltaic or an electrolytic cell? How do you know? b Does current flow in this cell spontaneously? c What is the maximum cell potential for this cell? d Say the cell is connected to a voltmeter. Describe what you might see for an initial voltage and what voltage changes, if any, you would observe as time went by. e What is the free energy of this cell when it is first constructed? f Does the free energy of the cell change over time as the cell runs? If so, how does it change?arrow_forward
- As the voltaic cell shown here runs, the blue solution gradually gets lighter in color and the gray solution gets darker. (a) What species is oxidized and what is reduced? (b) Which electrode is the anode and which is the cathode? (C) Which metal electrode gains mass? (d) In which direction do electrons flow through the external circuit?arrow_forwardFor a voltage-sensitive application, you are working on a battery that must have a working voltage of 0.85 V. The half-cells to be used have a standard cell potential of 0.97 V. What must be done to achieve the correct voltage? What information would you need to look up?arrow_forwardAn aqueous solution of KBr is placed in a beaker with two inert platinum electrodes. When the cell is attached to an external source of electrical energy, electrolysis occurs. (a) Hydrogen gas and hydroxide ion form at the cathode. Write an equation for the half-reaction that occurs at this electrode. (b) Bromine is the primary product at the anode. Write an equation for its formation.arrow_forward
- Consider the following galvanic cell: Calculate the concentrations of Ag+(aq) and Ni2+(aq) once the cell is dead.arrow_forwardConsider the voltaic cell Zn(s)Zn2+(aq)Cr3(aq)Cr(s) Write the half-cell reactions and the overall cell reaction. Make a sketch of this cell and label it. Include labels showing the anode, cathode and direction of electron flow.arrow_forwardIf you put a 9-volt battery in a smoke detector in your home or apartment, you are not installing a single galvanic cell. Explain how and why this is so.arrow_forward
- Write the cell notation for a voltaic cell with the following half-reactions. Ni(s)Ni2+(aq)+2ePb2(aq)+2ePb(s)arrow_forwardAs an example of an electrolytic cell, the text states: Sodium chloride is electrolyzed commercially in an apparatus called the Downs cell to produce sodium and chlorine. This is a high-temperature operation; the electrolyte is molten NaCl. Write the half-reaction equations for the changes taking place at each electrode. Is the electrode at which sodium is produced the anode or the cathode? The Downs cell electrolyzes molten melted sodium chloride, producing sodium and chlorine.arrow_forwardSketch a galvanic cell, and explain how it works. Look at Figs. 18.1 and 18.5. Explain what is occurring in each container and why the cell in Fig. 18.5 “works,” but the one in Fig. 18.1 does not.arrow_forward
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