NACE CP 2 Quiz 1

The elements of a corrosion cell include which of the following? 1. Anode 2. Cathode 3. Electrolyte 4. Electronic Path - Answer- All of the Above Faraday's Law calculates the A. potential of a metal in seawater B. potential of a metal in the metal ion solution C. metal lost based on the resistance D. metal lost due to current over time - Answer- D. metal Lost due to current over time An environment where cathodic protection is NOT effective is A. liquid B. soil C. atmospherically exposed surface D. steel in concrete - Answer- C. atmospherically exposed surface Reference electrodes include which of the following? 1. Copper-copper sulfate 2. Hydrogen 3. Calomel 4. Silver-silver chloride - Answer- All of the above The stability of a copper-copper sulfate reference electrode does not vary with A. temperature B. exposure to sunlight C. an unsaturated solution of copper ions D. a saturated solution of copper ions - Answer- D. a saturated solution of copper ions The cathodic protection criteria for steel includes which of the following? 1. A potential of -850 mVCSE or more negative with current applied after IR drop is considered 2. A polarized potential of -850 mVCSE or more negative 3. polarization of 100 mV or greater 4. A polarized potential of -790 mV AgAgCl or more negative - Answer- All of the above