Question

The standard electrode potentials \( E^\circ (V) \) for \( Li^+/Li \), \( Na^+/Na \) respectively are:

(1) −3.04, −2.714
(2) −2.714, −3.04
(3) −3.04, −3.04
(4) −2.714, −2.714

• A. \( -3.04, -2.714 \)
• B. \( -2.714, -3.04 \)
• C. \( -3.04, -3.04 \)
• D. \( -2.714, -2.714 \)

Hint:

The more negative the standard electrode potential (\( E^\circ \)), the stronger the reducing agent. Lithium has a more negative potential than sodium, making it a stronger reducing agent.

Answer 1

The Correct Option is A

Step 1: Understanding Standard Electrode Potential 
The standard electrode potential (\( E^\circ \)) of an element is a measure of the tendency of the element to gain or lose electrons in an electrochemical reaction. It is given in volts (\( V \)) and is measured under standard conditions. 

Step 2: Standard Electrode Potentials for Lithium and Sodium 
- For lithium, the standard reduction potential is: \[ Li^+ + e^- \rightarrow Li, \quad E^\circ = -3.04V \] - For sodium, the standard reduction potential is: \[ Na^+ + e^- \rightarrow Na, \quad E^\circ = -2.714V \] 

Step 3: Evaluating the Given Options 
- Option (1): \( -3.04, -2.714 \)  Correct as per standard data.
- Option (2): \( -2.714, -3.04 \)  Incorrect as the values are reversed.
- Option (3): \( -3.04, -3.04 \)  Incorrect as the value for sodium is wrong.
- Option (4): \( -2.714, -2.714 \)  Incorrect as the value for lithium is wrong.
Thus, the correct answer is 

Option (1).