Electrochemistry

Given that $E_{\mathrm{O}_2 / \mathrm{H}_2 \mathrm{O}}^{\circ}=+1.23 \mathrm{~V}$; $\begin{aligned} & E_{\mathrm{S}_2 \mathrm{O}_8^{2-} / \mathrm{SO}_4^{2-}}^{\circ}=2.05 \mathrm{~V} ; E_{\mathrm{Br}_2 /…

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?

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.…

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

At $298\text{ K}$, the molar conductivity of $x\%$ (w/w) $MX$ solution (aqueous) is $123.5\text{ S cm}^2\text{ mol}^{-1}$. The conductance of same solution is $1.9 \times 10^{-3}\text{ S}$. The value of $x$ is _______…

A volume of $x\,\mathrm{mL}$ of $5\,\mathrm{M}\,\mathrm{NaHCO_3}$ solution was mixed with $10\,\mathrm{mL}$ of $2\,\mathrm{M}\,\mathrm{H_2CO_3}$ solution to make an electrolytic buffer. If the same buffer was used in…

Consider the following data. Electrolyte$\Lambda^{\circ}_m$ (S cm$^2$ mol$^{-1}$)$\text{BaCl}_2$$x_1$$\text{H}_2\text{SO}_4$$x_2$HCl$x_3$ $\text{BaSO}_4$ is sparingly soluble in water. If the conductivity of the…

An electrochemical cell, consist of the following two redox couples, $M^{x+}(aq)/M(s)$ $[E_{red}^\ominus=+0.15\text{ V}]$ and $Fe^{3+}(aq)/Fe(s)$ $[E_{red}^\ominus=-0.036\text{ V}]$. The cell EMF $(E_{cell})$ is…

Potassium chlorate is prepared by electrolysis of $\mathrm{KCl}$ in basic solution as shown by following equation. $6\mathrm{OH}^{-}+\mathrm{Cl}^{-}\rightarrow\,\mathrm{ClO}_{3}^{-}+3H_{2}O+6e^{-}$ A current of…

What is the standard reduction potential $\left(E^{o}\right)$ for $\mathrm{Fe}^{3+}\rightarrow\,\mathrm{Fe}?$ Given that:…

In the cell,…

Copper reduces $\mathrm{NO}_{3}^{-}$ into $\mathrm{NO}$ and $\mathrm{NO}_{2}$ depending upon the concentration of $\mathrm{HNO}_{3}$ in solution. (Assuming fixed $\left[\mathrm{Cu}^{2+}\right]$ and…