Question

Which is the stronger oxidizing agent, \(\mathrm{Cu}^{2+}(\mathrm{aq})\) or \(\mathrm{H}^{+}(\mathrm{aq})\) ?

Short answer

Cu2+ is the stronger oxidizing agent.

Step-by-step solution

Identify the Standard Reduction Potentials

Please look up the standard reduction potentials of Cu2+ and H+ in a table of standard reduction potentials. You will notice that the standard reduction potential of Cu2+ is \(+0.34 V\) and the standard reduction potential of H+ is \(0 V\).

Compare the Standard Reduction Potentials

Next, let's compare these values. The higher reduction potential means that the species is more likely to get reduced. In this case, Cu2+ has a higher redox potential than H+.

Answer the question

Since Cu2+ has a higher standard reduction potential than H+, it is more likely to be reduced and hence, is a stronger oxidizing agent than H+