Which of the following statements is not correct?   A) The direction of a redox reaction can be predicted by the sign of the cell potential (E0net). B) Half-cell potentials for half-reactions are determined by comparing them with a standardized electrode. C) Since voltage does not depend on concentrations, we use standard conditions to compare different reactions. D) We have to measure the cell potential to obtain the difference in potential energy because the potential of half-reactions cannot be measured directly.

A certain half-reaction has a standard reduction potential E = -0.23 V. An engineer proposes using this half-reaction at the anode of a red galvanic cell that must provide at least 0.60 V of electrical power. The cell will operate under standard conditions. Note for advanced students: assume the engineer requires this half-reaction to happen at the anode of the cell. Is there a minimum standard reduction. potential that the half-reaction used at the cathode of this cell can have? If so, check the "yes" box and calculate the minimum. Round your answer to 2 decimal places. If there is no lower limit, check the "no" box. Is there a maximum standard reduction potential that the half-reaction used at the cathode of this cell can have? If so, check the "yes" box and calculate the maximum. Round your answer to 2 decimal places. If there is no upper limit, check the "no" box. By using the information in the ALEKS Data tab, write a balanced equation describing a half reaction that could be used…

Will the potential of the galvanic cell change if we add the same amount of water to the electrolyte solutions that make up the galvanic cell?

A certain metal M forms soluble sulfate salt MSO4. Suppose the left half cell of a galvanic cell apparatus is filled with a 3.50 M solution of MSO4 and the right half cell with a 3.50 mM solution of the same substance. Electrodes made of M are dipped into both solutions and voltmeter is connected between them. The temperature of the apparatus is held constant at 40.0 °C. Which electrode will be positive? What voltage will the voltmeter show? Assume its positive lead is connected to the positive electrode. Be sure your answer has a unit symbol, if necessary, and round it to 2 significant digits. 0 left right 0×100 X ?

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

Determine the ΔG° in KJ for a voltaic cell made of a Ag strip and a Pb strip immersed in 1.0 M aqueous AgNO3 and Pb(NO3)2 solutions, respectively, with all other cell components in place. (Use Table 18.3 for your standard cell potentials.)   Determine the thermodynamic equilibrium constant K for a voltaic cell made of a Zn strip and a Pb strip immersed in 1.0 M aqueous Zn(NO3)2 and Pb(NO3)2 solutions, respectively, at 25.00°C, with all other cell components in place. (Use Table 18.3 for your standard cell potentials.)

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

Why is it necessary to use salt bridge in A galvanic cell?

Describe the basic features of a cell diagram (or line notation) for an electrochemical cell.

bew DARGERS Determine the thermodynamic equilibrium constant K for a voltaic cell made of a Ag strip and an Al strip immersed in 1.0 M aqueous AgNO3 and Al(NO3)3 solutions, respectively, at 25.00°C, with all other cell components in place. (Use Table 18.3 for your standard cell potentials.) Type your numeric answer and submit Hint Equation 18.8 in Section 18.3.1 relates cell voltage to AG. SOPINIOANE Cat 0 Cannot be empty HE HIG X