AIIMS 2008
- Exam
- AIIMS
- Year
- 2008
- Subject
- Chemistry
- Chapter
- Electrochemistry
AIIMS 2008 · Chemistry · Electrochemistry
The standard oxidation potential (E^ ^ ) for the half cell reaction...
The standard oxidation potential (E^{{}^{\circ}}) for the half cell reaction are
$$\begin{array}{ll}\mathrm{Zn} \rightarrow \mathrm{Zn}^{2+}+2 e^{-} ; & E^{{}^{\circ}}=+0.76 \mathrm{~V}\\
\mathrm{Fe} \rightarrow \mathrm{Fe}^{2+}+2 e^{-} ; & E^{{}^{\circ}}=+0.41 \mathrm{~V}
\end{array}$$
of the cell reaction is
$\mathrm{Zn}+\mathrm{Fe}^{2+} \rightarrow \mathrm{Zn}^{2+}+\mathrm{Fe}$
Options
- A(-0.35 \mathrm{~V})
- B(+0.35 \mathrm{~V})
- C(0.17 \mathrm{~V})
- D(1.17 \mathrm{~V}).
Correct answer
B. (+0.35 \mathrm{~V})
Step-by-step solution
E_{\text{cell }^{\circ}=0.76-0.41=0.35