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AP Chemistry
9.9 Cell Potential and Free Energy
9.8 Galvanic (Voltaic) and Electrolytic Cells
BeginnerMCQDrawing RepresentationsConceptual17.4k
Draw a two-half-cell galvanic apparatus. On the left, one outlined beaker contains solution to half its height, with the solution label \(1.0\text{ M Zn(NO}_3\text{)}_2\text{(aq)}\) centered inside; one vertical metal strip immersed in it is labeled \(\text{Zn(s)}\). On the right, a matching beaker contains the same liquid volume, labeled \(1.0\text{ M AgNO}_3\text{(aq)}\); its immersed vertical metal strip is labeled \(\text{Ag(s)}\). One U-shaped salt bridge connects the two solutions and is labeled \(\text{KNO}_3\text{(aq)}\). A continuous external wire connects the tops of the metal strips through one circular voltmeter labeled \(V\). Include no arrows on the wire or salt bridge, no polarity symbols, and no visible deposits or bubbles. No other labels, text, or annotations appear.
Galvanic cell used to model silver-ion recovery
A student constructs the galvanic cell shown to model the recovery of silver ions from laboratory waste. Both solutions are at standard conditions and the salt bridge contains aqueous potassium nitrate. Relevant standard reduction potentials are given below.

Reduction half-reaction\(E^\circ\)
\(\text{Ag}^+\text{(aq)}+e^-\rightarrow\text{Ag(s)}\)\(+0.80\text{ V}\)
\(\text{Zn}^{2+}\text{(aq)}+2e^-\rightarrow\text{Zn(s)}\)\(-0.76\text{ V}\)

Which choice correctly identifies the electrode reactions, direction of electron flow, and salt-bridge ion migration in this cell?

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