Write the Nernst equation for the cell reaction given below and calculate the emf of the cell at …

Write the Nernst equation for the cell reaction given below and calculate the emf of the cell at $298\text{ K}$. $2\text{Cr}(s) + 3\text{Fe}^{2+}(0\cdot1\text{M}) \longrightarrow 2\text{Cr}^{3+}(0\cdot01\text{M}) + 3\text{Fe}(s)$ Given $E^\circ(\text{Cr}^{3+}/\text{Cr}) = -0\cdot74\text{ V}$, $E^\circ(\text{Fe}^{2+}/\text{Fe}) = -0\cdot44\text{ V}$

Calculate the molar conductance at infinite dilution ($\Lambda^\infty_m$) for $\text{NH}_4\text{OH}$. Given that $\Lambda^\infty_m$ for $\text{Ba(OH)}_2$, $\text{BaCl}_2$ and $\text{NH}_4\text{Cl}$ are $457\text{ ohm}^{-1}\text{cm}^2\text{mol}^{-1}$, $240\text{ ohm}^{-1}\text{cm}^2\text{mol}^{-1}$ and $129\text{ ohm}^{-1}\text{cm}^2\text{mol}^{-1}$ respectively.