Chem-116 final exam Save
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Terms in this set (36)
Say X and Y are generic metals, acting as That X more readily reacts to form a cation than Y does.
electrodes for a voltaic (galvanic) cell.
If I were to say that X is "more reactive
than Y", what do I mean?
A voltaic (galvanic) cell has the generic X: Anode, ANIONS from the salt bridge flow toward it, it
metals X and Y as electrodes. LOSES mass, ELECTRONS in the wire flow AWAY from it.
X is more readily reactive than Y (oxidation)
(meaning X more readily reacts to form a Y:Cathode, CATIONS from the salt bridge flow toward it,
cation than Y does). it GAINS mass, ELECTRONS in the wire flow TOWARD it.
SHOW ME A DIAGRAM (reduction)
Describe X
Describe Y
Define anode and cathode The anode is where the oxidation reaction takes place. In
other words, this is where the metal loses electrons.
The cathode is where the reduction reaction takes place.
This is where the metal electrode gains electrons.
, In a voltaic cell set up, what does the The Cell potential: E°cell.
voltmeter read? E°cathode-E°anode = E°reduction-E°oxidation
What is the small equation for E°cell Nernst Equation.
(standard cell potential)? Temp. is in Kelvin.
What is the equation for E (expected cell n=# of electrons transferred in rxn (typically 2).
potential) (DIAGRAM)? F=Faraday's constant=96,500 C/mol.
What is the name of the last equation? Q=the concentration or partial pressure (so, gas) of the
What is T in? products raised to the power of their coefficients in the
What does n stand for? balanced equation, divided by the concentration or
What does F stand for? partial pressures of the reactants raised to the power of
What is Q=? their coefficients in the balanced equation. (So include
any gases and anything with a charge).
What is the function of a salt bridge in It connects the 2 half-cells.
an electrochemical cell?
2 half-rxns are occurring at each
electrode. Show me what a cell diagram
of this should look like (DIAGRAM).
Leave the first rating
Terms in this set (36)
Say X and Y are generic metals, acting as That X more readily reacts to form a cation than Y does.
electrodes for a voltaic (galvanic) cell.
If I were to say that X is "more reactive
than Y", what do I mean?
A voltaic (galvanic) cell has the generic X: Anode, ANIONS from the salt bridge flow toward it, it
metals X and Y as electrodes. LOSES mass, ELECTRONS in the wire flow AWAY from it.
X is more readily reactive than Y (oxidation)
(meaning X more readily reacts to form a Y:Cathode, CATIONS from the salt bridge flow toward it,
cation than Y does). it GAINS mass, ELECTRONS in the wire flow TOWARD it.
SHOW ME A DIAGRAM (reduction)
Describe X
Describe Y
Define anode and cathode The anode is where the oxidation reaction takes place. In
other words, this is where the metal loses electrons.
The cathode is where the reduction reaction takes place.
This is where the metal electrode gains electrons.
, In a voltaic cell set up, what does the The Cell potential: E°cell.
voltmeter read? E°cathode-E°anode = E°reduction-E°oxidation
What is the small equation for E°cell Nernst Equation.
(standard cell potential)? Temp. is in Kelvin.
What is the equation for E (expected cell n=# of electrons transferred in rxn (typically 2).
potential) (DIAGRAM)? F=Faraday's constant=96,500 C/mol.
What is the name of the last equation? Q=the concentration or partial pressure (so, gas) of the
What is T in? products raised to the power of their coefficients in the
What does n stand for? balanced equation, divided by the concentration or
What does F stand for? partial pressures of the reactants raised to the power of
What is Q=? their coefficients in the balanced equation. (So include
any gases and anything with a charge).
What is the function of a salt bridge in It connects the 2 half-cells.
an electrochemical cell?
2 half-rxns are occurring at each
electrode. Show me what a cell diagram
of this should look like (DIAGRAM).
