How would you identify the anode of an unmarked diode?
What is the significance, if any, of the reverse-to-forward
resistance ratio of a diode?
How do you identify a germanium from a silicon diode?
A vacuum tube diode consists of concentric cylindrical
electrodes, the negative cathode and the positive anode. Because of
the accumulation of charge near the cathode, the electric potential
between the electrodes is not a linear function of the position,
even with planar geometry, but is given
by V(x)=Cx4/3 where x is the distance from the
cathode and C is a constant, characteristic of a
particular diode and operating conditions. Assume that the distance
between the cathode and anode is 14.0 mm and the
potential difference between electrodes is...
Questions Relating to Voltaic Cell and Potential Energy:*Electrons flow from anode to cathode because of difference in
____*Electrons flow spontaneously through circuit due to –––––*For a Zn Anode and Cu cathode setup, electrons flow from Zn to
Cu due to ––––*If a cell is operated under standard conditions then the cell
voltage (potential) is indicated by –––––
Write equations for the half-reactions that occur at the anode
and cathode for the electrolysis of each of the following aqueous
solutions. a) Ni(NO3)2 (aq) b)KCl (aq) c)CuBr2 (aq)
Take into account the aqueous solution. The oxidation and
reduction of water have to be considered for each
Write equations for the half-reactions that occur at the anode
and cathode for the electrolysis of each of the following aqueous
solutions.
Part A Ni(NO3)2(aq) Express your answers as chemical equations
separated by a comma. Identify all of the phases in your
answer.
Part B KCl(aq) Express your answers as chemical equations
separated by a comma. Identify all of the phases in your
answer.
Part C CuBr2(aq) Express your answers as chemical equations
separated by a comma. Identify all of...
Part A
Write the anode and cathode reactions that cause the corrosion
of iron metal to aqueous iron (II).
Express your answer as a chemical equation. Identify all of the
phases in your answer.
anode reaction:
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Part B
Express your answer as a chemical equation. Identify all of the
phases in your answer.
cathode reaction:
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Part C
Write the balanced half-reactions involved in the air oxidation
of Fe2+(aq) to Fe2O3?3H2O.
Express your answer as...
Exercise 18.44
Label the anode and cathode, indicate the direction of electron
flow and the species present in each solution for each of the
following overall redox reactions.
Part A
Ni2+(aq)+Mg(s)→Ni(s)+Mg2+(aq)
Drag the appropriate labels to their respective targets.
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Correct
Part B
Indicate the half-reaction occurring at Anode.
Express your answer as a chemical equation. Identify all of the
phases in your answer.
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Part C
Indicate the half-reaction occurring at Cathode.
Express...
While performing an experiment with an electrolytic cell (both
cathode and anode are zinc in 1 M ZnSO4 solution), with the cathode
in a beaker and the anode in a porous cup inside the same beaker?
What function does the porous cut perform if ions can still move
through it? What is the porous cup separating? If the porous cup
were removed (or if there was a hole in it), would the reaction
stop? Why?