What is the E_cell for the following concentration cell at 25 °C:
Pt(s) ∣ H₂(g,0.025 atm) ∣ H⁺ (0.012 M) H⁺ (aq,1 M) ∣ H₂(g,1 atm) ∣ Pt(s)
2 H⁺(aq) + 2 e^- → H₂(g) E° = 0.V

Question

What is the E_cell for the following concentration cell at 25 °C: Pt(s)∣ H₂(g,0.025 atm)∣ H⁺ (0.012 M) H⁺ (aq,1 M)∣ H₂(g,1 atm)∣ Pt(s) 2 H⁺(aq)+ 2 e^- → H₂(g)E° = 0.V

Quizplus · Accepted Answer

The equation for the cell reaction is: 2 H⁺(aq) ⇌ H^- + H^- The standard reduction potential of the half-reaction: H^- ⇌ H₂(g) + 2 e^- is given as 0 V. The standard reduction potential for half-reaction: 2 H⁺(aq) + 2 e^- ⇌ H₂(g) is: E°cell = E°cathode - E°anode = 0 - 0.066 = -0.066 V Therefore, the E_cell for the concentration cell at 25 °C is -0.066 V. The correct answer is B.

What Is the Ecell for the Following Concentration Cell at 25

What Is the E_cell for the Following Concentration Cell at 25