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Questions and Answers
What is the standard cell potential (Eocell) for the cell formed by the half-reactions Fe3+ + e- → Fe2+ and Zn2+ + 2e- → Zn?
What is the standard cell potential (Eocell) for the cell formed by the half-reactions Fe3+ + e- → Fe2+ and Zn2+ + 2e- → Zn?
- -1.53 V
- -0.01 V
- 0.01V
- 1.53 V (correct)
A Pt | H2; p1/solution of H2 ions / Pt | H2; p2 cell represents:
A Pt | H2; p1/solution of H2 ions / Pt | H2; p2 cell represents:
- Electrode concentration cell (correct)
- Electrolytic cell
- None of these
- Electrolyte concentration cell
In the galvanic cell prepared using zinc and iron, what reaction occurs at the cathode?
In the galvanic cell prepared using zinc and iron, what reaction occurs at the cathode?
- Fe2+ → Fe3+ + e- (correct)
- Fe3+ + e- → Fe2+
- Zn2+ + 2e- → Zn
- Zn → Zn2+ + 2 e-
Which of the following factors does not affect the electrode potential of an electrode?
Which of the following factors does not affect the electrode potential of an electrode?
If a hydrogen electrode is dipped in a solution of pH 3 at 25°C, what would be the potential?
If a hydrogen electrode is dipped in a solution of pH 3 at 25°C, what would be the potential?
If the salt bridge is removed between two half-cells, what happens to the voltage?
If the salt bridge is removed between two half-cells, what happens to the voltage?
What is the closeness of the experimental results, or mean of a number of results, to the true value called?
What is the closeness of the experimental results, or mean of a number of results, to the true value called?
In a galvanic cell using zinc and iron, what reaction occurs at the anode?
In a galvanic cell using zinc and iron, what reaction occurs at the anode?
An electrolyte is a substance which:
An electrolyte is a substance which:
What defines strong electrolytes?
What defines strong electrolytes?
Why does an electrochemical cell stop working after some time?
Why does an electrochemical cell stop working after some time?
Which statement is not true for a standard hydrogen electrode?
Which statement is not true for a standard hydrogen electrode?
What defines a half-cell reaction?
What defines a half-cell reaction?
What are the advantages of electrochemical analysis due to?
What are the advantages of electrochemical analysis due to?
What does the standard hydrogen electrode consist of?
What does the standard hydrogen electrode consist of?
The significant disadvantage of the saturated calomel electrode (SCE) is
The significant disadvantage of the saturated calomel electrode (SCE) is
The reference electrode that is thermally more stable is:
The reference electrode that is thermally more stable is:
In an electrolytic cell, which of the following is the half-cell where reduction takes place.
In an electrolytic cell, which of the following is the half-cell where reduction takes place.
Mercury covered by a layer of mercurous chloride in contact with saturated potassium chloride solution is a description of which electrode?
Mercury covered by a layer of mercurous chloride in contact with saturated potassium chloride solution is a description of which electrode?
