For the reaction 2Cr2 Cl2g 2Cr3 2Cl E cellis 178 V Calcul

For the reaction, 2Cr²⁺ + Cl₂(g) ® 2Cr³⁺ + 2Cl^-, E °_cellis 1.78 V. Calculate E °_cellfor the related reaction Cr³⁺ + Cl^- ® Cr²⁺ + (1/2)Cl₂(g).

Solution

reverse the given reaction then devide it by 2 gives the required reaction ;;;;;;;;;;;Eo (cell) for the second reaction = -0.89 V