20. What is the potential difference between decinormal

20. What is the potential difference between decinormal

20. What is the potential difference between decinormal silver-silver electrodes and platinum immersed in a solution containing Na2Cr2O7 with C (Cr2O7) 2- = 0.01 mol / dm3 and Cr (NO3) 3 = 0.01 mol / dm3 pH of the solution = 0.