A Daniell cell (Zn|Zn , Cu |Cu) has

CHEMISTRY · Single correct · A Level · Chemistry · Electrode potentials · Electrode potentials

Problem

A Daniell cell (Zn|Zn2+^{2+}, Cu2+^{2+}|Cu) has Ecell∘=+1.10 VE^\circ_{\text{cell}} = +1.10\,\text{V}. A separate water-splitting cell that produces O2_2(g) and H2_2(g) has Ecell∘=−1.23 VE^\circ_{\text{cell}} = -1.23\,\text{V}. A student connects the two cells in series so that the Daniell cell supplies current to the water-splitting cell, and gas bubbles are observed in the water-splitting compartment. Which statement correctly describes the role of each cell during operation? (a) Both cells function as galvanic cells. (b) The Daniell cell functions as a galvanic cell, and the water-splitting cell functions as an electrolytic cell. (c) Both cells function as electrolytic cells. (d) The Daniell cell functions as an electrolytic cell, and the water-splitting cell functions as a galvanic cell.

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