Given a cell: Pt$|$ Cr$3+0,002$M; Cr$2+0,2$M$||$ Sn$4+0,1$M; Sn$2+0,001$M $|$ Pt Knowing that o$($Sn$4+/$Sn$2+)=0,15$V; o$($Cr$3+/$Cr$2+)=-0,41$V$.$a$.$ Determine the cathode and anode and the potential of the given cell.b$.$ Write the half$-$reactions occurring on the electrodes and the overall reaction in the cell.c$.$ Calculate the constant K of the cell reaction.