1. To analyze some industrial copper anodes, a sample of 1.0250 g was taken, dissolved in nitric acid and made up to 250 mL. The sample was analyzed by electrogravimetry of the 250 mL; the weight of the cathode before electrolysis was 5.3215 g and after it was 6.3464 g. How many grams of copper were in the 250 mL?

2. Write the Nernst equation for the redox couple IO3-/I2.

3. The hull of a ship was made of an alloy of Mn with Zn. Knowing that the Normal potentials of the pairs Mn2+/Mn and Zn2+/Zn are: E1 = - 1.18 V and E2 = - 0.76 V. Will the ship's hull be corroded?