Use the given half reactions to "construct" an electrolytic cell. Zn2+ + 2 e- â Zn Eocell=-0.76 V Cu2+ + 2 e- â Cu Eocell=0.34 V Predict the standard potential of the cell at 298 K.

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11 Nov 2019

Use the given half reactions to "construct" an electrolytic cell.

Zn²⁺ + 2 e^- â Zn E^o_cell=-0.76 V

Cu²⁺ + 2 e^- â Cu E^o_cell=0.34 V

Predict the standard potential of the cell at 298 K.

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Consider a cell based on the following line notation at 298 K:

Cu | Cu²⁺ (0.289 M) || Ni²⁺ (1.25 M) | Ni

Given:

Cu²⁺ + 2 e^- â Cu E^o = 0.34 V
Ni²⁺ + 2 e^- â Ni E^o = -0.23 V

How many of the following responses are true?

1. Using a Pt electrode in place of the Cu electrode will not change the potential of the cell
2. Reduction takes place at the cathode
3. Adding equal amounts of water to both half reactions will not change the potential of the cell
4. Increasing the concentration of the Ni²⁺ will decrease the potential of the cell
5. Increasing the concentration of the Cu²⁺ will decrease the concentration of the reaction

Consider a cell based on the following line notation at 298 K:

Cu | Cu2+ (0.253 M) || Ni2+ (1.35 M) |Ni

Given: Cu2+ + 2 e- â Cu Eo = 0.34 V

Ni2+ + 2 e- â Ni Eo = -0.23 V

How many of the following responses are true?

1. Increasing the concentration of the Ni2+ will decrease the potential of the cell

2. Decreasing the concentration of the Cu2+ will increase the concentration of the reaction

3. Using a Pt electrode in place of the Cu electrode will not change the potential of the cell

4. Reduction takes place at the cathode

5. Adding equal amounts of water to both half reactions will decrease the potential of the cell

I said 3 and it was wrong

Please fill in the rest of the table below. For theoretical potential, % error, cell reactions for cathode, anode and net, and delta G in kJ. Table 1
Cell	Measured Total Potential from Multimeter (V)1	Individual Half-Cell Potentials				Cell Reactions (anode, cathode, and net)	Delta G (kJ)
Cell	Measured Total Potential from Multimeter (V)1	Cu Electrode Standard Potential (V)2	Metal Electrode Experimental Potential (V)3	Metal Electrode Theoretical Potential (V)4	Metal Electrode Potential % Error	Cell Reactions (anode, cathode, and net)	Delta G (kJ)
Cu Sn	0.419	0.34	-0.079
Cu Al	0.632	0.34	-0.292
Cu Fe	0.461	0.34	-0.121
Cu Zn	0.945	0.34	-0.605

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Use the given half reactions to "construct" an electrolytic cell.

Zn²⁺ + 2 e^- â Zn E^o_cell=-0.76 V

Cu²⁺ + 2 e^- â Cu E^o_cell=0.34 V

Predict the standard potential of the cell at 298 K.

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Use the given half reactions to "construct" an electrolytic cell. Zn2+ + 2 e- â Zn Eocell=-0.76 V Cu2+ + 2 e- â Cu Eocell=0.34 V Predict the standard potential of the cell at 298 K.

Unlock all answers

Related textbook solutions

Basic Chemistry

Principles of Chemistry Molecular Approach

Chemistry: Structure and Properties

Principles of Chemistry Molecular Approach

Chemistry: A Molecular Approach

Chemistry: A Molecular Approach

Principles of Chemistry: A Molecular Approach

Chemistry: The Central Science

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Use the given half reactions to "construct" an electrolytic cell.

Zn²⁺ + 2 e^- â Zn E^o_cell=-0.76 V

Cu²⁺ + 2 e^- â Cu E^o_cell=0.34 V

Predict the standard potential of the cell at 298 K.