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NACE CP 2 Quiz 1 2023/ 30 Questions and Answers/ 100% Correct.
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NACE CP 2 Quiz 1 2023/ 30 Questions andAnswers/ 100% Correct.
The elements of a corrosion cell include which of the following?
1. Anode
2. Cathode
3. Electrolyte
4. Electronic Path - -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 - -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 - -C. atmospherically exposed surface
-Reference electrodes include which of the following?
1. Copper-copper sulfate
2. Hydrogen
3. Calomel
4. Silver-silver chloride - -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 - -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 - -All of the above
-If a potential of -484 mV is measured with respect to a hydrogen electrode, what is a
the potential to copper-copper sulfate?
A. -168 mVCSE
B. -316 mVCSE
C. -800 mVCSE
D. -1116 mVCSE - -C. -800 mVCSE
E1 + (CF1) = E2 + (CF2)
-484 mVCSE + 0 = E2 + (316 mV)
E2 = -800 mVCSE
-When cathodic protection is applied to a corroding steel surface, it shifts the corrosion
cell potential as follows:
A. No change in potential
B. Cathode more negative
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