Chemistry: Electrochemistry Flashcards
7 cards from real AP practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Chemistry: Electrochemistry flashcards as text
Galvanic corrosion of iron is accelerated when iron is in contact with a metal that is:
Answer: Less easily oxidized (more noble)
Contact with a more noble metal forces iron to act as the anode and corrode faster.
Cathodic protection of a steel pipeline often uses a sacrificial anode made of:
Answer: Magnesium or zinc
Magnesium or zinc oxidizes preferentially, protecting the steel as a sacrificial anode.
A standard hydrogen electrode is assigned a reduction potential of exactly:
Answer: 0.00 V
The SHE is defined as the reference with E° = 0.00 V.
In a hydrogen fuel cell, hydrogen gas is supplied to the anode where it is:
Answer: Oxidized
Hydrogen is oxidized to protons and electrons at the fuel cell anode.
Which factor does NOT appear in the relationship ΔG° = −nFE°?
Answer: Temperature
Temperature does not appear directly in ΔG° = −nFE°.
A metal with a very negative standard reduction potential tends to be a:
Answer: Strong reducing agent
A very negative reduction potential means the metal is easily oxidized, acting as a strong reducing agent.
Why does electroplating require the object to be made the cathode?
Answer: So metal cations are reduced and deposited onto it
At the cathode, metal cations are reduced and plate onto the object's surface.