14.106 A voltaic cell is constructed in which the following reaction takes place: Cu (s) + 2Ag+ (aq) → Cu²+ (aq) + 2Ag (s) Suppose a 30.0-g piece of copper is used as the anode electrode and 25.0 g of copper remains after the reaction is stopped. If the reaction proceeded as expected, which of the following statements is correct? Choose the best answer. A 5.0 g of solid silver was produced at the cathode. B 0.0787 mol of solid silver was produced at the cathode. C 0.157 mol of electrons was transferred from Cu (s) to Ag+ (aq). D 25.0 g of solid copper was oxidized. E The anode solution becomes a lighter blue color as aqueous Cu²+ ions react to form solid copper. O O

A certain metal M forms a soluble sulfate salt MSO4. Suppose the left half cell of a galvanic cell apparatus is filled with a 200. mM solution of MSO4 and the right half cell with a 4.00 M 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 20.0 °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 x10 X S

A certain metal M forms a soluble nitrate salt M(NO3)2. Suppose the left half cell of a galvanic cell apparatus is filled with a 1.50 M solution of M(NO3)₂ and the right half cell with a 15.0 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 30.0 °C. Which electrode will be positive? What voltage will the voltmeter show? Assume its positive lead is connected to the positive electrode. 0 Be sure your answer has a unit symbol, if necessary, and round it to 2 significant digits. left right X Ś ?

Chlorine, Cl2, is produced commercially by the electrolysis of aqueous sodium chloride. The anode reaction is below. 2 Cl −(aq) → Cl2(g) + 2 e− How long (in s) will it take to produce 1.09 kg of chlorine if the current is 6.00  102 A?