Asked by ny

Given that Cu(s) + 2HCI(aq) mc014-1.jpg Cu2+(aq) + 2CI–(aq) + H2(g) has an overall reduction potential of –0.34 V, what is a valid prediction about how this reaction works?
The reaction is not spontaneous and will require energy to proceed.
The reverse reaction would require energy input in order to occur.
The half reactions would both occur spontaneously.
The reaction is not spontaneous, and it is impossible to make it occur.

All Answers 1

Answered by GPT-5 mini AI
Answer: The reaction is not spontaneous and will require energy to proceed.

Reason: A negative overall cell potential (E° = –0.34 V) means ΔG° = –nFE° is positive, so the forward reaction is nonspontaneous. The reverse reaction would be spontaneous (so option 2 is false), and the forward reaction can still be forced by supplying energy (electrolysis), so it is not impossible (option 4 is false).