List of top Chemistry Questions on Nernst Equation asked in AP EAPCET

Observe the following cell \[ M(s)\;|\;M^{2+}(xM)\;||\;H^+(0.02M)\;|\;H_2(g,1\,bar)\;,\;Pt(s) \] What is the value of $x$? Given: \[ \frac{2.303RT}{F}=0.06V \] \[ E^\circ_{M^{2+}|M}=-0.14V \] \[ E^\circ_{H^+|H_2}=0.0V \] \[ E_{cell}=0.077V \] \[ \log 4=0.602 \] \[ \text{antilog}(2.7)=0.05,\qquad \text{antilog}(2.60)=0.04 \]

The following reaction takes place in a cell at 298 K: $2M^{3+}(aq) + 2I^{-}(aq) \rightarrow 2M^{2+}(aq) + I_2(s)$. What is the value of $\log K_c$ for this reaction? (Given: $E_{cell}^\circ = 0.235 V, F = 96500 C mol^{-1}, R = 8.3 J mol^{-1} K^{-1}$)

The emf values of three galvanic cells I, II and III are $E_1$, $E_2$ and $E_3$ respectively. Determine the correct order among them. \[ \text{(I)}\quad Zn|Zn^{2+}(1M)||Cu^{2+}(0.1M)|Cu \] \[ \text{(II)}\quad Zn|Zn^{2+}(1M)||Cu^{2+}(1M)|Cu \] \[ \text{(III)}\quad Zn|Zn^{2+}(0.1M)||Cu^{2+}(1M)|Cu \]

The correct value for log$_{10}$ $K_c$ (where $K_c$ is the equilibrium constant) for the equilibrium reaction at 298 K \[ \text{2Fe}^{3+} + 3\text{I}^- \rightleftharpoons 2\text{Fe}^{2+} + \text{I}_3^- \quad (\text{E}^\circ_{\text{cell}} = x \, \text{V}) \]