A visible change is observed when a strip of iron is placed in an aqueous solution of

Consider the following equation: Cr₂O^2-_7(aq) + 14H⁺_(aq) + 6e^- → 2Cr³⁺_(ag) + 7H₂O₍₁₎. The oxidation number of chromium changes from

Which of the following ions require the largest quantity of electricity for discharge at an electrode?

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

When concentrated sodium chloride solution is electrolysed using inert electrodes, the products are