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AP Chemistry
9.8 Galvanic (Voltaic) and Electrolytic Cells
BeginnerMCQDrawing RepresentationsConceptual17k
A grayscale schematic diagram shows two open beakers connected by an external wire and an inverted U-tube. The left beaker contains liquid labeled 1.0 M Zn(NO3)2 and a solid vertical rectangle with solid gray fill labeled Zn(s). The right beaker contains liquid labeled 1.0 M Cu(NO3)2 and a solid vertical rectangle with diagonal hatched fill labeled Cu(s). The inverted U-tube bridges both beakers with its open ends immersed in the liquids and is labeled KNO3 salt bridge. A single line representing a wire connects the top of the Zn(s) strip to the top of the Cu(s) strip, passing through a circle labeled V centered above the beakers. No other particles, labels, text, or annotations appear.
Galvanic cell consisting of \(\text{Zn/Zn}^{2+}\) and \(\text{Cu/Cu}^{2+}\) half-cells connected by a \(\text{KNO}_3\) salt bridge.
A galvanic cell is constructed as shown in the diagram below.

Half-Reaction\(E^\circ\text{ (V)}\)
\(\text{Zn}^{2+}\text{(aq)} + 2\text{e}^- \rightarrow \text{Zn(s)}\)\(-0.76\)
\(\text{Cu}^{2+}\text{(aq)} + 2\text{e}^- \rightarrow \text{Cu(s)}\)\(+0.34\)

When the cell operates spontaneously at \(298\text{ K}\), which of the following correctly describes the movement of electrons through the external circuit and the movement of \(\text{K}^+\) cations through the salt bridge?

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