Macmillan Learning A coulometer's sensitivity is limited by its minimum current being delivered for its minimum time. Consider a coulometer that can deliver 3.8 mA for 0.18 s. How many moles of electrons can this coulometer deliver in 0.18 s via a current of 3.8 mA? moles of electrons: mol e¯ Consider a 0.014 M solution of a two-electron reducing agent. How many milliliters of this solution would it take to deliver the same number of moles of electrons as calculated in the first part of the question? volume: mL

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Enter your answer in the provided box. Calculate the emf of the following concentration cell: Mg(s) | Mg2+ (0.17 M) || Mg2+ (0.85 M) | Mg(s) V

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4. Name EXPERIMENT 12 ELECTROCHEMISTRY: GALVANIC CELLS Electrodes Use the table of standard reduction potentials from your textbook to complete the following table. The zinc-copper Daniell cell is given as an example. Cu Cu Zn Zn Zn Cu Zn Mg Cu Mg Conc. of Each Cation 1.0 M Zn²+ 0.5 M Cu²+ 1.0 M Zn²+ 0.1 M Cu²+ Date 1.0 M Zn²+ Zn²+ + 2e-Zn (ag) Half-Reactions A. Determine the E for the Standard Zn-Cu Galvanic Cell Zn²+ (aq) 1.0 M Cu²+ Cu²+ +2e-Cu Cathode B. Determine the E* for the Cu-Zn Cell at Non-standard Concentrations 1.0 M Zn²+ Anode + 2e → Zn Instructor Cu²+2e-Cu Zn²+ + 2e → Zn (aq) Report Sheet Cathode or Anode? Anode E E (table) (calcd) -0.76 V +0.34 V -0.76V Cathode 0.34 v anode 0.76v Cathode 0.34 v Cu²+ + 2e - Cul C. Determine the E for Zn-Mg and Cu-Mg Galvanic Cells Zn(aq) +2e Zn (s) cathode -0.76 1.0 M Mg²+Mga+2e Mg(s) anode -2.38 +1.10 V 1.10 V 1.0 M Cu²+ +Ze Cu(s) Cathode 40.34 v 2+ +2e 1.0 M Mg²+ M Mg(s) anode -2.38v "You must use the Nernst equation to calculate this…

Enter your answer in the provided box. Calculate the emf of the following concentration cell: Mg(s) | Mg*(0.37 M) || Mg*(0.77 M) | Mg(s) V

Set up a cell that has a Mg electrode in a 1.0 M aqueous Mg2+ solution on the left side and a Cu electrode in a 1.0 M aqueous Cu2+ solution on the right side. Add the salt bridge. What is the balanced net ionic equation for this reaction? Include physical states.