Galvanic Cells

Topic Page

Questions

• How can a galvanic cell become an electrolytic cell?
• How do electrons flow in a galvanic cell?
• How do you calculate galvanic cell potential?
• How do you sketch galvanic cells?
• Why might a galvanic cell go dead?
• Question #38b3d
• What is a galvanic cell?
• What are some common mistakes students make with galvanic cells?
• What is an example of a galvanic cell practice problem?
• What energy conversion takes place in a galvanic cell?
• Is a voltaic cell the same as a galvanic cell?
• How does temperature affect voltage in a galvanic cell?
• How does a galvanic cell differ from an electrolytic cell?
• How can I calculate galvanic cell potential?
• How can I balance galvanic cell equations?
• Can you describe the process that releases electrons in a zinc copper voltaic cell?
• Are the reactions in galvanic cells always spontaneous? Why?
• A galvanic cell is constructed in which an Ag+/Ag half cell is connected to a Ni2+/Ni half cell. Calculate delta G standard for this reaction at 25 degrees celsius: 2Ag+ (aq) + Ni (s) ---> 2Ag(s) + Ni2+(aq)
• A galvanic cell has two solutions: solution one is 0.3 M FeCl2, solution two is 1.7 M MgCl2. The electrode in solution one is Fe and the electrode in solution two is Mg. The temperature is 85 °C. What is the spontaneous cell potential in this setup?
• Where does reduction occur in a galvanic cell?
• Two half-cells in a galvanic cell consist of one iron (Fe(s)) electrode in a solution of iron (II) sulphate (FeSO4(aq)) and a silver (Ag(s)) electrode in a silver nitrate solution. What will happen to the mass of the cathode and the mass of the anode while the cell is operating?
• What is a galvanic cell made of?
• Why does the current of a galvanic cell decrease with time?
• Why do galvanic cells need a salt bridge?
• Why may galvanic cells go dead?
• Why is KNO3 needed for galvanic cells to function?
• How can chemical energy be converted into electrical energy?
• Question #2b92d
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• What is the standard emf of a galvanic cell made of a Sn electrode in a 1.0 M #Sn(NO_3)_2# solution and a Cu electrode in a 1.0 M #Cu(NO_3)_2# solution at 25°C?
• Question #ffc6a
• Question #bf929
• For the cell #"Cd"|"Cd"^(2+), "NO"_3^(-)||"H"^(+), "ClO"_4^(-), "Cl"^(-) | "C"#...?
• Question #ef585
• What is the voltage of a galvanic cell made with silver and nickel?
• What is the cathode of a galvanic cell made with magnesium and gold?
• What is the standard cell notation of a galvanic cell made with silver and nickel?
• How does a salt bridge improve a battery?
• What happens at the cathode in an electrolytic cell?
• Question #ef321
• A current of 3.03 A is passed through a #Pb(NO_3)_2# solution for 1.20 hours. How much lead is plated out of the solution?
• What is the standard EMF of a cell that uses the #"Mg/Mg"^(2+)# and #"Cu/Cu"^(2+)# half-cell reactions at #25^@"C"# ?
• If the two reactions below are coupled to form a voltaic cell, how do you calculate the standard emf (electromagnetic force) representing a spontaneous reaction?
• Find overall reaction for a galvanic cell that will have the highest cell potential. What is the overall potential of the cell? Which two equations do I use?
• What are concentration cells?
• How does concentration affect galvanic cell?
• How does concentration effect an electrochemical cell?
• Why does a concentration cell work?
• If you needed to make ultrapure silver from crude silver, where would you collect the pure silver metal in an electrolytic cell?
• Question #d0cfc
• What is the voltage of an electrolytic cell with nickel and copper electrodes?
• What is the standard cell notation of a galvanic cell made with zinc and gold?
• What occurs at the anode of a galvanic cell?
• Nickel and aluminum electrodes are used to build a galvanic cell. What is the theoretical cell potential assuming standard conditions? What is the shorthand notation for this cell?
• What is electrolysis and how does it apply to water and salt?
• Why can't we have half-reactions by themselves?
• Question #d16a3
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• What process occurs at the anode of an electrolytic cell? At the catho de?
• Question #12c06
• In the battery, or voltaic cell, electrons are transferred from one electrode to the other. What is the electrode that gains electrons?
• Question #7cb5e
• Question #3ef0c
• What is the standard reduction potential for the half reaction #Zn^(2+) (aq) + 2e^(-) -> Zn(s)#?
• Question #d891d
• Consider the 2 half - cells : #sf(Cu^(2+)+2erightleftharpoonsCu)# #sf(E^(@)=+0.34"V")# #sf(Ag^(+)+erightleftharpoonsAg)# #sf(E^(@)=+0.80"V")# What is the solution to the points below?
• How do you write the balanced equation for this cell reaction? #2Cd(s) + 2Aq^(+)(aq) -> Cd^(2+)(aq) + 2Ag(s)#
• Electrochemistry question? (Voltaic Cell)
• Question #86eb1
• What is the danger of overcharging a battery?
• In a voltaic cell, where does the half-reaction with the lower standard reduction potential take place?
• Given the half reactions Au+3 +3e- -> Au and Sn+4 +2e- -> Sn+2 in a galvanic cell, what is the voltage if [Au+3]=1.45M [Sn+4]=.50M and [Sn+2]=.87M?
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• How do you calculate the standard cell potential of a cell constructed from #Mg^(2+)#/#Mg# and#Ni^(2+)#/#Ni#. Which half-cell is the anode and which half-cell is the cathode?
• Help with the following electrochem problems about standard cell potentials?
• Question #0bb5c
• Question #bc428
• I know reduction occurs at the cathode and oxidation occurs at the anode, but why are positive and negative terminals switched when comparing galvanic and electrolytic cells?
• What is the standard emf of a galvanic cell made of a Cd electrode in a 1.0 M #Cd(NO_3)_2# solution and a Cr electrode in a 1.0 M #Cr(NO_3)_3# solution at 25°C?
• Question #72818
• How do you determine the concentrations of reagents in a galvanic cell when the cell "dies"?
• Question #39ff1
• A voltaic cell which is constructed with Sn+2/Sn (Ereduction=-0.14V) and Zn+2/Zn (Eoxidation=-0.76V) is represented by Zn|Zn+2(1M)||Sn+2|Sn(1M). What is the emf of the cell?
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• Consider the following voltaic cell. What is the half reaction that takes place at the cathode? What is "E" for the cell? How many electrons are exchanged (n)?
• A voltaic cell is constructed using the following half-reactions. How do you determine the cell reaction?
• Question #a3de5
• Question #6e25b
• Question #dfaf1
• #Zn(s) +Ni^(2+)(aq) -> Zn^(2+)(aq) + Ni(s)# Which part of the cell conducts electrons in this reaction and describes the direction of electron flow as the cell operates?
• What is standard potential? Is standard potential for a particular substance is constant ( standard potential for zinc = #-0.76# v ) ? How to calculate the same?
• Question #44bd4
• Question #eb1d3
• What is the function of a salt bridge?
• Is the electrode where H+ ions are reduced to hydrogen gas a positive or negative electrode? Please explain why.
• Question #fdc11
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• What is firebricks which is used in Down's Cell? What is its role?
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• Draw a diagram for this Galvanic cell, labeling the electron flow, the anode and cathode, and the positive and negative sides of the Galvanic cell?
• Electrodeposition of copper: what mass of copper can be deposited in 1.00 hr by a current of 1.62 A?
• Calculate #E_("cell")# for this reaction when [#H^+#] = 4.5 M and [#HSO_4^-#] = 4.5 M, if #E°_("cell")# = 2.04 V?
• Use half-cell potentials to calculate #K_(eq)# for the reaction below?
• Galvanic cell run at 25° C: calculate #\DeltaG# when #K=2.79xx10^7#?
• Calculate #E_(cell)# for a battery based in the following two half-reactions and conditions?
• What is the value of #E_(cell)# at #"25"^oC# after 5.0 hours of operation at 3.0 A...?
• If a galvanic cell is produced using a nickel electrode and 1.0 M #Ni^(2+)# along with a silver electrode and 1.0 M #Ag^+#, calculate the concentration of #Ni^(2+)# and #Ag^+# in each compartment once the battery is dead?
• Using the voltage from the following Galvanic cell, calculate #K_(sp)# for #Ag_2SO_4# (s)?
• In an electrolytic cell, calculate the concentration of #\sf{Cu^(2+)}# remaining in 425 mL of solution that was originally 0.366 M #\sf{CuSO_4}#, after the passage of 2.68 A for 262 seconds?
• Calculate #\sf{E_"cell"}# after the cell operates at a temperature of 298 K for 75 minutes at a current of 3.0 A?