Which category of cells does the following galvanic cell belong to? What is the value of `E_("cell")^(@)` for this cell? What is the condition for `E_("cell")` of the cell to be positive?
`Pt|Cl_(2)(g, p_(1)atm)|Cl^(-)(aq, CM)|Cl_(2)(g, p_(2)atm)|Pt`

Explanation

The cell belongs to concentration cell.
Anode reaction : `2Cl^(-)(aq, CM)rarr Cl_(2)(g, p_(1)" atm")+2e`
Cathode Reaction : `Cl_(2)(g, p_(2)" atm")+2e rarr 2Cl^(-)(aq, CM)`
Cell Reaction : `Cl_(2)(g, p_(2)" atm")rarr Cl_(2)(g, p_(1)" atm")`
`E_("cell")=E_("cell")^(@)-(RT)/(2F)log.(p_(1))/(p_(2))`
Here `E_("cell")=0` as the system is made of the same compound.