Question

What is the approximate \(E_{\text{cell}}\) (in V) for the following cell at \(298\ \mathrm{K}\)? \[ \mathrm{Sn(s)\,|\,Sn^{2+}(0.05\,M)\,||\,H^+(0.02\,M)\,|\,H_2(1\,bar)\,|\,Pt(s)} \] Given: \[ E^\circ_{\mathrm{Sn^{2+}/Sn}}=-0.14\ \mathrm{V},\qquad E^\circ_{\mathrm{H^+/H_2}}=0.00\ \mathrm{V} \] \[ \log(125)=2.097 \]

• A. \(0.218\)
• B. \(0.078\)
• C. \(0.020\)
• D. \(0.040\)

Hint:

For a cell, \[ \boxed{ E=E^\circ-\frac{0.0591}{n}\log Q } \] at \(298\ \mathrm{K}\).

Answer 1

The Correct Option is B