Д184 Make a chart and write an equation and current-pro

The seller is blocked and sales of the product are suspended

184. Make a chart and write an equation and current-producing electrode reactions in the cell, in which one of the electrodes - cobalt (SCo2 + = 10-1 mol / l), and the other - a standard hydrogen. Calculate the EMF element at 298 K. How will the emf if the concentration of Co2 + ions reduced by 10 times?