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Sia

15240672380's Question
Chemistry
Posted 9 months ago

the following cell is constructed. beaker 1 contains hydrogen electrode and has solution of 1.0MHCL(aq)1.0 \mathrm{M} \mathrm{HCL}(\mathrm{aq}). beaker 2 contains silver and has a solution of 1.0M1.0 \mathrm{M} Cu(NO3)2(aq)\mathrm{Cu}(\mathrm{NO} 3) 2(\mathrm{aq}). PREDICT THE READING ON THE VOLTMETER:
OV
0.34 V0.80 V+0.80 V+0.34 V
\begin{array}{l}
-0.34 \mathrm{~V} \\
-0.80 \mathrm{~V} \\
+0.80 \mathrm{~V} \\
+0.34 \mathrm{~V}
\end{array}
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Answer from Sia
Posted 9 months ago
D
Key Concept
Standard Electrode Potentials
Explanation
The cell potential is calculated using the standard reduction potentials of the two half-cells. The standard hydrogen electrode (SHE) has a potential of 0 V, and the standard reduction potential for the Cu^2+/Cu half-cell is +0.34 V. Since the Cu^2+/Cu half-cell has a higher reduction potential, it will act as the cathode and the SHE will act as the anode. The cell potential is the difference between the cathode and anode potentials: E_cell = E_cathode - E_anode = +0.34 V - 0 V = +0.34 V.

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