Question: What is the cell potential of a Daniell cell at standard conditions?
Options:
1.10 V
1.96 V
0.76 V
0.34 V
Correct Answer: 1.10 V
Solution:
The standard cell potential of a Daniell cell is 1.10 V.
What is the cell potential of a Daniell cell at standard conditions?
Practice Questions
Q1
What is the cell potential of a Daniell cell at standard conditions?
1.10 V
1.96 V
0.76 V
0.34 V
Questions & Step-by-Step Solutions
What is the cell potential of a Daniell cell at standard conditions?
Step 1: Understand what a Daniell cell is. It is a type of electrochemical cell that generates electricity through a chemical reaction.
Step 2: Know that standard conditions refer to a temperature of 25 degrees Celsius (298 K) and 1 M concentration for all solutions.
Step 3: Identify the half-reactions involved in a Daniell cell: Zinc (Zn) oxidizes to Zn²⁺ and Copper (Cu²⁺) reduces to Cu.
Step 4: Look up the standard reduction potentials for these half-reactions: Zn²⁺/Zn is -0.76 V and Cu²⁺/Cu is +0.34 V.
Step 5: Calculate the standard cell potential (E°cell) using the formula: E°cell = E°(cathode) - E°(anode). Here, E°(cathode) is +0.34 V and E°(anode) is -0.76 V.
Step 6: Plug in the values: E°cell = 0.34 V - (-0.76 V) = 0.34 V + 0.76 V = 1.10 V.
Step 7: Conclude that the standard cell potential of a Daniell cell is 1.10 V.
Electrochemistry – The study of chemical processes that cause electrons to move, which is fundamental to understanding cell potentials.
Standard Cell Potential – The voltage produced by a galvanic cell under standard conditions (1 M concentration, 1 atm pressure, and 25°C).
Daniell Cell – A type of electrochemical cell that consists of a zinc electrode and a copper electrode, used to illustrate basic principles of electrochemistry.
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