A solution of AuCl3 is electrolyzed by passing 85.0 A of current for 17.6 min. What mass of gold plates out?

A scientist constructs a galvanic cell as shown in the diagram. Use the data table with standard reduction potentials for the substances to determine the anode and cathode half cells. As the cell operates, which electrode increases in mass?

Which of the following cannot form both high- and low-spin octahedral complexes?

A certain metal, M, forms a soluble sulfate salt, MSO4. Suppose the left half-cell of a galvanic cell apparatus is filled with a 175 mM solution of and the right half-cell with a 3.50 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 25.0 °C. What voltage will the voltmeter show?

For the redox reaction in acidic solution: a I2(s) + b Cu2+(aq) + c H2O(l)

Which of the following reactions will occur spontaneously under standard-state conditions and 25°C?

Zinc-cerium batteries are a type of battery utilizing the reaction: Zn2+(aq) + 2 Ce3+(aq) → Zn(s) + 2 Ce4+(aq). To construct this battery, would you need to use an inactive electrode for either the anode or cathode?

In a voltaic cell anions move through the salt bridge to the cathode solution

Refer to the following standard reduction reactions when answering this question: Cr2O72−(aq) + 14 H+(aq) + 6e− → 2 Cr3+(aq) + 7 H2O(l)   E˚ = +1.33 V I2(s) + 2e− → 2 I−(aq)             E˚ = +0.53 V For the cell:  Pt(s) | I−(aq) | I2(s) || H+(aq), Cr2O72−(aq), Cr3+(aq) | Pt(s) at 298 K, the Ecell was measured to be 0.89 V. If [Cr2O72−] = 2.0 M, [H+] = 1.0 M; [ I−] = 1.0 M, then the [Cr3+] is closest to

This question is worth 10 extra credit points. The following extra credit question is worth 10 points. 1) (5 points) Provide a balanced chemical equation for the following: Solid magnesium reacts with oxygen gas to produce aqueous magnesium oxide. Full points are granted for a correctly balanced equation that includes correct chemical formulas, states of matter, equation setup, and proper balancing. 2) (5 points) Describe a procedure to make 750 mL of a 1.0 M solution of magnesium oxide. The following materials are available in lab: balance, scoopula, weigh tray, volumetric flask, 100.00 g solid magnesium oxide powder, 1.00 L of 5.0 M aqueous solution of magnesium oxide, 1.0 liter of water, graduated cylinder. Please note that there are several ways this solution can be made, and not all materials need to be used.  Full points are granted for providing correct amounts, and a correct procedure that can be replicated by another student in lab.