Practice

19. A copper-hydrogen cell is constructed and its cell potential is measured. The voltmeter

indicates that the copper metal is the cathode.

Cu(s) | Cu²+ (aq) || H₂(g), H*

(aq)

| Pt(s)

ΔΕ= ?

Write and label the half-reaction and net equations and calculate the standard reduction

potential of the cell (refer to table at back of textbook, p. 805).