If two metallic ions of the same concentration migrate to a graphite cathode, the one that would be preferentially discharged is the one that has the
Answer Details
When two metallic ions of the same concentration migrate to a graphite cathode, the ion that would be preferentially discharged is the one that has a stronger tendency to accept electrons. This is because during the process of electrolysis, the positively charged ions are reduced (gain electrons) at the cathode. The ion with a stronger tendency to accept electrons is more likely to be reduced at the cathode than the other ion, leading to its preferential discharge. This is known as the selective discharge of ions. The mass, electrical charge, and stability of the ion in solution do not affect its preferential discharge.