What is the calculated value of the cell potential at 298 K for an electrochemical cell with the following reaction, when the Cl₂ pressure is 4.67x10-4 atm, the C1 concentration is 1.25 M, and the Ni²+ concentration is 1.48 M ? Cl₂ (g) + Ni(s) → 2Cl¯¯ (aq) + Ni²+ (aq) Ecell The cell reaction as written above is spontaneous for the concentrations given: Submit Answer V Retry Entire Group 9 more group attempts remaining Screen capture. now

4 Consider the voltaic cell: Sn(s) | Sn*2(aq) II Fe*3(aq) | Fe*2(aq) a) Write the overall cell reaction. b) Calculate the standard cell potential at 25°C. c) Calculate the change in free-energy of the reaction at 25°C d) What is the maximum work you can obtain from 25.0 g of nickel? e) What is the value of the equilibrium constant of the reaction? f) Which is the stronger oxidizing agent: Sn*2 or Fe*3? Explain

Pb(s) Determine which of the following statements about the cell shown are True or False. True The standard cell potential, o, equals 0.93 V. True As the reaction proceeds, the concentration of the silver ions decreases. False Cations move to the lead half-cell. True The mass of the silver electrode is increasing. True The silver half-cell is the cathode. False The cell, as represented by the line notation, is a voltaic cell. True True The lead electrode is the anode. Electrons are spontaneously produced in the silver half-cell. salt bridge Ag(s) Pb+2 So Pb2+2e → Pb(s) AS NO3 E--0.13V Ag + le → Ag(s) E° - +0.80V Pb(s) Pb2+ (1M) || Ag+ (1M) | Ag(s)

A certain metal M forms a soluble sulfate salt MSO4. Suppose the left half cell of a galvanic cell apparatus is filled with a 2.50 M solution of MSO, and the right half cell with a 25.0 mM solution of the same substance. Electrodes made of M are dipped into both solutions and a voltmeter is connected between them. The temperature of the apparatus is held constant at 40.0 °C. left Which electrode will be positive? x10 O right What voltage will the voltmeter show? Assume its positive lead is connected to the positive electrode. necessary, and round it to 2 significant Be sure your answer has a unit symbol, digits.