Question

Statement 1:$E^{o} _{cell}= 0$ for a chloride ion concentration cell.
Statement 2:For this concentration cell where $E_{cell}=\frac{RT}{nF}ln \frac{\left[Cl^{-}\right]LHS}{\left[Cl^{-}\right]RHS}$

• A. If both Statement 1 and Statement 2 are true and the statement 2 is the correct explanation of the statement 1.
• B. If both Statement 1 and Statement 2 are true but statement 2 is not the correct explanation of the statement 1.
• C. If Statement 1 is true but Statement 2 is false.
• D. If Statement 1 is false but Statement 2 is true

Answer 1

Answer: (B)

$Pt, Cl_{2} | Cl^{-} (aq) || Cl^{-} (aq) | Cl_{2} (g), Pt.$
Anode: $2Cl^{-} \to Cl_{2} + 2e^{-}$ (R.H.S.)
Cathode: $Cl_{2}+ 2e \to 2Cl^{-}$
$E_{cell}=O \frac{RT}{nF}ln \frac{\left[Cl^{-}\right]LHS}{\left[Cl^{-}\right]RHS}$
$E_{cell}= \frac{RT}{nF}ln \frac{\left[Cl^{-}\right]RHS}{\left[Cl^{-}\right]LHS}$