Question

If the reference electrode consists of a Cu/Cu2+ half-cell, what ion are you likely trying to measure?

Answer 1

With out two electrodes we arew unable to measure electrode potential. Combining with SHE we can calculate potential of another electrode. Copper electrode and hydrogen electrode joined through voltmeter.

The electrons are flow2s from hydrogen to copper electrode.

The hydrogen electrode act as anode and copper act as cathode.

Reduction takes place at cathode.

At cathode : Cu⁺² +2e^- --------------> Cu

Here we get standard reduction potention of Cu.

Once we want to oxidation potential of Cu then we can reverse the sign of reduction potential.