Which of the following changes takes place at the positive electrode during the recharging of a lead accumulator?

For a $Ag-Zn$ button cell,the net reaction is $Zn_{(s)} + Ag_{2}O_{(s)} \rightarrow ZnO_{(s)} + 2Ag_{(s)}$. Given $\Delta G_{f}^{o}(Ag_{2}O) = -11.21 \ kJ \ mol^{-1}$ and $\Delta G_{f}^{o}(ZnO) = -318.3 \ kJ \ mol^{-1}$,the $E^{o}_{cell}$ of the button cell is ......... $V$.

Why is a finely divided particle layer of $Pt$ and $Pd$ provided on the electrodes of a fuel cell?

The standard cell potential of $Zn|Zn^{2+}_{(aq)}||Cu^{2+}_{(aq)}|Cu$ cell is $1.10 \, V$. The maximum work obtained by this cell will be ............. $kJ$.

Assertion : If $\lambda^o_{Na^{+}}$ and $\lambda^o_{Cl^{-}}$ are molar limiting conductivity of sodium and chloride ions respectively,then the limiting molar conductivity for sodium chloride is given by the equation :
$\Lambda^o_{NaCl} = \lambda^o_{Na^{+}} + \lambda^o_{Cl^{-}}$
Reason : This is according to Kohlrausch law of independent migration of ions.

Provide the chemical reaction and the potential of a Daniell cell by drawing a labelled diagram. Also,provide primary information indicating what type of cell it is.