NACE CP2 EXAM 2 PRACTICE GUIDE 2026
FULL SOLUTION SET
◉ The ____ expresses the exact electromotive force of a cell in terms
of the activities of products and reactants of the cell
A) Ernest Equation
B) Faraday Equation
C) Ohm's Law Equation
D) Nernst Equation
E) Uniform Equation. Answer: d
◉ Given the Nernst Equation, using the Valence of Common Metals
Table, and using the partial Standard emf Series of Metals solve:
What is the potential of zinc in a 0.01 molar zinc chloride solution at
25C?
A) -0.892V
B) -0.287V
C) -0.827V
D) -0.297V
,E) -0.889V. Answer: c
E= -0.763 + (0.059/2) * log (0.71 *0.01/1)
= -0.827V
◉ Standard conditions for pure metals in the
emf series are based on one unit activity of metal ions in the
electrolyte at ___ C
with no impurities in the metal or electrolyte and with reference to a
standard
____ electrode.
A) 25, hydrogen
B) 35, hydrogen
C) 25, CSE
D) 35, CSE
E) 25, SSC
F) 35, SSC. Answer: a
,◉ The ____ the concentration of metal ions in the electrolyte, the ____
the metal.
A) lower, less active
B) higher, less active
C) lower, more active
D) higher, less active. Answer: b
◉ In reference to the temperature in a corrosion cell, in most cases,
electrode at the _____ temperature becomes the ____
A) lower, anode
B) higher, cathode
C) lower, cathode
D) higher, anode. Answer: d
◉ During metal fabrication of structures, highly stressed areas of a
metal will tend to be at ____ energy levels, thus more ____ than less
stressed areas
A) higher, active
B) lower, active
, C) higher, inactive
D) lower, inactive. Answer: a
◉ True or False (t or f):
Corrosion cells may form because of differences in the electrolyte.
Answer: t
◉ ____ cells are responsible for much of the corrosion that take place
in soils, particularly in bare or poorly coated pipe
A) concentration
B) steady state
C) carbon
D) dynamic
E) telluric. Answer: a
◉ In many cases in naturally occurring soils, a portion of pipe lying
in the more _____ soil is the ____ and in the less ____soil is the ___.
A) inductive, anode / inductive, cathode
B) inductive, cathode / inductive, anode
FULL SOLUTION SET
◉ The ____ expresses the exact electromotive force of a cell in terms
of the activities of products and reactants of the cell
A) Ernest Equation
B) Faraday Equation
C) Ohm's Law Equation
D) Nernst Equation
E) Uniform Equation. Answer: d
◉ Given the Nernst Equation, using the Valence of Common Metals
Table, and using the partial Standard emf Series of Metals solve:
What is the potential of zinc in a 0.01 molar zinc chloride solution at
25C?
A) -0.892V
B) -0.287V
C) -0.827V
D) -0.297V
,E) -0.889V. Answer: c
E= -0.763 + (0.059/2) * log (0.71 *0.01/1)
= -0.827V
◉ Standard conditions for pure metals in the
emf series are based on one unit activity of metal ions in the
electrolyte at ___ C
with no impurities in the metal or electrolyte and with reference to a
standard
____ electrode.
A) 25, hydrogen
B) 35, hydrogen
C) 25, CSE
D) 35, CSE
E) 25, SSC
F) 35, SSC. Answer: a
,◉ The ____ the concentration of metal ions in the electrolyte, the ____
the metal.
A) lower, less active
B) higher, less active
C) lower, more active
D) higher, less active. Answer: b
◉ In reference to the temperature in a corrosion cell, in most cases,
electrode at the _____ temperature becomes the ____
A) lower, anode
B) higher, cathode
C) lower, cathode
D) higher, anode. Answer: d
◉ During metal fabrication of structures, highly stressed areas of a
metal will tend to be at ____ energy levels, thus more ____ than less
stressed areas
A) higher, active
B) lower, active
, C) higher, inactive
D) lower, inactive. Answer: a
◉ True or False (t or f):
Corrosion cells may form because of differences in the electrolyte.
Answer: t
◉ ____ cells are responsible for much of the corrosion that take place
in soils, particularly in bare or poorly coated pipe
A) concentration
B) steady state
C) carbon
D) dynamic
E) telluric. Answer: a
◉ In many cases in naturally occurring soils, a portion of pipe lying
in the more _____ soil is the ____ and in the less ____soil is the ___.
A) inductive, anode / inductive, cathode
B) inductive, cathode / inductive, anode
