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Metal loss or corrosion occurs at the
A) cathode
B) Anode
C) Electronic path
D) Metallic path
What are the four parts of the corrosion cell
A) anode, resistor, electrolyte, metallic path
B) anode, cathode, electron, electronic path
C) anode, cathode, electrolyte, metallic path
True or False (t or f):
Ions exist only in the electrolyte?
true
Electrons flow in a corrosion cell by which of the following paths?
A) anode to cathode via electrolyte
,B) cathode to anode via electronic path
C) anode to cathode via electronic path
At the cathodic surface in a corrosion cell, the electrons from the ____ meet ____ ions from the solution.
A) cathode, hydrogen
B) cathode, OH-
C) anode, hydrogen
D) anode, OH-
Oxidation of the metal occurs at the ____
surfaces and reduction of ____ ions occurs at the ____.
A) anodic, hydrogen, cathodes
B) cathode, OH-, anodic
C) anodic, OH-, cathodes
D) cathode, anodic, electrolyte
E) cathode, hydrogen, electrolyte
True or false
Is oxidation necessarily associated with oxygen?
False
Current flow in a corrosion cell flows which path:
,A) anode to metallic path to cathode
B) anode to electronic path to cathode
C) cathode to metallic to anode
D) cathode to electrolyte to anode
E) anode to electrolyte to cathode
Voltage is the measure of the electrochemical difference between two electrodes
in an electrolyte
_____ is the measure of the electrochemical difference between two electrodes
in an electrolyte
A) current
B) resistance
C) error
D) ohms
E) ohms-cm
F) voltage
The ________
represents the reversible work to move a unit charge from the electrode surface
through the solution to the reference electrode
A) current potential
B) electrode potential
C) resistance potential
D) ohms potential
E) Faraday potential
, Metals occur in nature in the form of various chemical compounds referred to as
___
A) ores
B) anodic metals
C) cathodic metals
D) carbohydrates
The amount of energy required by a metal during the refining
process determines the ___ or _______ of the metal.
A) current, active state
B) voltage, active state
C) active resistance, voltage
D) resistance, active state
E) current, active resistance
During the refining stage of metal the ____ the energy, the more ____
the metal and the more tendency it has to corrode.
A) higher, inactive
B) lower, active
C) higher, active
D) lower, inactive