Electrochem Flashcards
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What is the chemical process happening to Ag in this reaction?
Ag(s) ⇒ Ag+(aq) + e-
The Ag is undergoing oxidation.
The mnemonic to use in redox (reduction-oxidation) reactions is OIL RIG: Oxidation Is Loss (of electrons), Reduction Is Gain (of electrons).
In this case, the Ag is losing an electron, so it is being oxidized.
What is the chemical process happening to Fe in this reaction?
Fe3+(aq) + e- ⇒ Fe2+(aq)
The Fe3+ is undergoing reduction.
The mnemonic to use in redox (reduction-oxidation) reactions is OIL RIG: Oxidation Is Loss (of electrons), Reduction Is Gain (of electrons).
In this case, the Fe3+ is gaining an electron, so it is being reduced.
In an electrochemical cell, at which electrode does oxidation occur? At which electrode does reduction occur?
In any electrochemical cell, oxidation occurs at the anode, while reduction occurs at the cathode.
A simple mnemonic to remember this by:
AN OX, RED CAT
OXidation = ANode, REDuction = CAThode.
What type of electrochemical cell is being depicted below?
The cell is an electrolytic cell.
The two main types of electrochemical cells (electrolytic and galvanic) can be easily discerned by the presence or absence of a power source. In this case, the battery is the power source, indicating an electrolytic cell.
What are the units of current, I?
The units of current are amperes, A.
Current is defined as charge over time Q/t, so 1 A = 1 C/s.
What type of electrochemical cell is being depicted below?
The cell is an galvanic cell.
The two main types of electrochemical cells (electrolytic and galvanic) can be easily discerned by the presence or absence of a power source. In this case, the lack of a battery indicates that this is a galvanic cell.
What is the chemical process happening to Ag in this reaction?
Ag(s) ⇒ Ag+(aq) + e-
The Ag is undergoing oxidation.
The mnemonic to use in redox (reduction-oxidation) reactions is OIL RIG: Oxidation Is Loss (of electrons), Reduction Is Gain (of electrons).
In this case, the Ag is losing an electron, so it is being oxidized.
What is the chemical process happening to Fe in this reaction?
Fe3+(aq) + e- ⇒ Fe2+(aq)
The Fe3+ is undergoing reduction.
The mnemonic to use in redox (reduction-oxidation) reactions is OIL RIG: Oxidation Is Loss (of electrons), Reduction Is Gain (of electrons).
In this case, the Fe3+ is gaining an electron, so it is being reduced.
In an electrochemical cell, at which electrode does oxidation occur? At which electrode does reduction occur?
In any electrochemical cell, oxidation occurs at the anode, while reduction occurs at the cathode.
A simple mnemonic to remember this by:
AN OX, RED CAT
OXidation = ANode, REDuction = CAThode.
What type of electrochemical cell is being depicted below?
The cell is an electrolytic cell.
The two main types of electrochemical cells (electrolytic and galvanic) can be easily discerned by the presence or absence of a power source. In this case, the battery is the power source, indicating an electrolytic cell.
What are the units of current, I?
The units of current are amperes, A.
Current is defined as charge over time Q/t, so 1 A = 1 C/s.
What type of electrochemical cell is being depicted below?
The cell is an galvanic cell.
The two main types of electrochemical cells (electrolytic and galvanic) can be easily discerned by the presence or absence of a power source. In this case, the lack of a battery indicates that this is a galvanic cell.
What type of electrochemical cell is being depicted below?
The cell is an electrolytic cell.
The two main types of electrochemical cells (electrolytic and galvanic) can be easily discerned by the presence or absence of a power source. In this case, the battery is the power source, indicating an electrolytic cell.
What type of electrochemical cell is being depicted below?
The cell is an galvanic cell.
The two main types of electrochemical cells (electrolytic and galvanic) can be easily discerned by the presence or absence of a power source. In this case, the lack of a battery indicates that this is a galvanic cell.
What type of electrochemical cell is being depicted below?
The cell is an electrolytic cell.
The two main types of electrochemical cells (electrolytic and galvanic) can be easily discerned by the presence or absence of a power source. In this case, the battery is the power source, indicating an electrolytic cell.
What type of electrochemical cell is being depicted below?
The cell is an galvanic cell.
The two main types of electrochemical cells (electrolytic and galvanic) can be easily discerned by the presence or absence of a power source. In this case, the lack of a battery indicates that this is a galvanic cell.
