Depict the galvanic cell in which the reaction $\mathrm{Zn}\left(\mathrm{s}\right)+2{\mathrm{Ag}}^{+}\left(\mathrm{aq}\right)\to {\mathrm{Zn}}^{2+}\left(\mathrm{aq}\right)+2\mathrm{Ag}\left(\mathrm{s}\right)$ takes place. Further show:

(i) which of the electrode is negatively charged,

(ii) the carriers of the current in the cell, and

(iii) individual reaction at each electrode

Assign oxidation number to the underlined element in the following species:

$\mathrm{NaH}\underline{\mathrm{S}}{\mathrm{O}}_4$

Assign oxidation number to the underlined element in the following species:

${\mathrm{H}}_4{\underline{\mathrm{P}}}_2{\mathrm{O}}_7$

Assign oxidation number to the underlined element in the following species:

${\mathrm{K}}_2\underline{\mathrm{Mn}}{\mathrm{O}}_4$

Assign the oxidation number to the underlined element in the following species:

$\mathrm{Ca}{\underline{\mathrm{O}}}_2$

Assigned the oxidation number to the underlined element in the following species:

$\mathrm{Na}\underline{\mathrm{B}}{\mathrm{H}}_4$

Assign oxidation number to the underlined element in the following species:

${\mathrm{H}}_2{\underline{\mathrm{S}}}_2{\mathrm{O}}_7$

Assign oxidation number to the underlined element in the following species:

$\mathrm{KAl}{\left(\underline{\mathrm{S}}{\mathrm{O}}_4\right)}_2.12{\mathrm{H}}_2\mathrm{O}$