Electrochemistry

Given below are half cell reactions : $\mathrm{MnO}_{4}^{-}+8H^{+}+5e^{-}\rightarrow\,\mathrm{Mn}^{2+}+4H_{2}O$, $E_{\mathrm{Mn}^{2+}/\mathrm{MnO}_{4}^{-}}^{o}=-1.510V$…

Consider the change in oxidation state of Bromine corresponding to different emf values, as shown in the diagram below: Then, what is the species undergoing disproportionation?

For a cell involving one electron $E_{cell}^{\ominus\,}=0.59V$ at $298K$, the equilibrium constant for the cell reaction is: $\left[Giventhat\frac{2.303RT}{F}=0.059VatT=298K\right]$

Aqueous solution of which of the following compounds is the best conductor of electric current?

The molar conductance of $\mathrm{NaCl},\mathrm{HCl}$ and $\mathrm{CH}_{3}\mathrm{COONa}$ at infinite dilution are $126.45,426.16$ and $91.0\mathrm{Scm}^{2}\mathrm{mol}^{-1}$ respectively. The molar conductance of…

Identify the reaction from following having topposition in EMF series (Std.red. potential) accordingto their electrode potential at$298K.$

The molar conductivity of $0.007M$ acetic acid is $20S\mathrm{cm}^{2}\mathrm{mol}^{-1}.$ What is the dissociation constant of acetic acid? Choose the correct option.…

The molar conductivity of a $0.5\mathrm{mol}\mathrm{dm}^{-3}$ solution of $AgNO_{3}$ with electrolytic conductivity of $5.76\times\,10^{-3}Scm^{-1}$ at $298K$

The standard cell potential of the following cell $\mathrm{Zn}\left|\mathrm{Zn}^{2+}(\mathrm{aq})\right| \mathrm{Fe}^{2+}(\mathrm{aq}) \mid \mathrm{Fe}$ is 0.32 V . Calculate the standard Gibbs energy change for the…

Given below are half cell reactions :MnO4-+8H++5e-$\rightarrow$Mn2++4H2O,EMn2+/MnO4-o=-1.510 $\text{V}_{12}\text{O}_{2}$+2H++2e-$\rightarrow$H2OEO2/$\text{H}_{2}\text{Oo}$=+1.223 VWill the permanganate ion, MnO4-…

Calculate emf of the half cell given below :$\text{Pt (s)} | \text{H}_2 \text{(g, 2 atm)} | \text{HCl (aq, 0.02 M)}$$E^{\circ}_{\text{H}_2/\text{H}^{+}} = 0$ V$\left(\text{Given}: \dfrac{2.303\ RT}{F} = 0.059, \log 2 =…

At 298 K, the standard electrode potentials of Cu2+/Cu, Zn2+/Zn, Fe2+/Fe and Ag+/Ag are 0.34 V, -0.76 V, -0.44 V and 0.80 V, respectively.On the basis of standard electrode potential, predict which of the following…