Homework Answers
Electrons always flow from the oxidation half cell i.e. anode to the reduction half cell i.e. cathode through the external wire.
Salts maintains the electrical neutrality of the electrochemical solutions.
Electrons does not flow from salt bridge.
Answer -- E. Electrons flow from the anode to the cathode through an external wire.
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QUESTION 7 Which of the following statements best describes the movement of electrons in an electrochemical...
During an electrochemical reaction, electrons move through the external circuit from the _______ and negative ions...
During an electrochemical reaction, electrons move through the external circuit from the _______ and negative ions in the cell move toward the _______ (be careful!). A. anode, anode B. anode, cathode C. cathode, anode D. cathode, cathode E. salt bridge, salt bridge
In a concentration cell, what drives the movement of electrons from the anode to the cathode?...
In a concentration cell, what drives the movement of electrons from the anode to the cathode? a. charge differences in the anode and cathode compartments b. temperature differences in the anode and cathode compartments c. ion concentration differences in the salt bridge and cathode compartment d. ion concentration differences in the anode and cathode compartments e. ion concentration differences in the anode compartment and the salt bridge
Choose the label which best describes the following: A B C D E F G H Direction...
Choose the label which best describes the following:
A B C D E F G H Direction which anions move through the
salt bridge
A B C D E F G H Pt anode
The overall, balanced, spontaneous reaction occurring in this
(standard) cell is:
Cr2O72−(aq) + 6Cl−(aq)
+ 14H+(aq) → 7H2O(l) + 2Cr3+(aq) +
3Cl2(g)
7H2O(l) + 2Cr3+(aq) + 3Cl2(g) →
Cr2O72−(aq) + 6Cl−(aq)
+ 14H+(aq)
7H2O(l) + 2Cr3+(aq) + Cl2(g) →
Cr2O72−(aq) + 2Cl−(aq)
+ 14H+(aq)
2Cr3+(aq) + 3Cl2(g) →...
A voltaic electrochemical cell is constructed in which the anode is a Pb2+Pb half cell and...
A voltaic electrochemical cell is constructed in which the anode is a Pb2+Pb half cell and the cathode is a Cu2+, Cu+ half cell. The half-cell compartments are connected by a salt bridge. Write the anode reaction. ___+______---->_____ +______ Write the cathode reaction. ______+________---->______ +_____ Write the net cell reaction. _______+_______------>______ +_______ In the external circuit, electrons migrate_____(from or to) the Pb2+Pb electrode ______ (from or to) the Cu2+, Cu+ electrode. In the salt bridge, anions migrate______ (from or to)...
Enter electrons as e Use smallest possible integer coefficients for ALL reactions If a box is not...
Enter electrons as e Use smallest possible integer coefficients for ALL reactions If a box is not needed, leave it blank. A voltaic electrochemical cell is constructed in which the anode is a Ag lAgh f-cell compartme nts are connected by a salt bridge. Write the anode reaction. Write the cathode reaction. Write the net cell reaction. In the external circuit, electrons migrate the Br2 Br electrode the Ag lAg electrode. In the salt bridge, anions migrate the Br,lBr compartmentthe...
A voltaic electrochemical cell is constructed in which the anode is a Alt|Al half cell and...
A voltaic electrochemical cell is constructed in which the anode is a Alt|Al half cell and the cathode is a Co2+|Co half cell. The half-cell compartments are connected by a salt bridge Write the anode reaction Write the cathode reaction. Write the net cell reaction the Al3 the Co2+Co In the external circuit, electrons migrate Al electrode electrode the Co2Co compartment the Al3Al In the salt bridge, anions migrate compartment +
A voltaic electrochemical cell is constructed in which the anode is a l2l I half cell...
A voltaic electrochemical cell is constructed in which the anode is a l2l I half cell and the cathode is a Clzl CT half cell The half-cell compartments are connected by a salt bridge. Write the anode reaction. Write the cathode reaction. Write the net cell reaction In the external circuit, electrons migrate ' the Cll cr electo del the 121 r electrode In the salt bridge, anions migratethe Cl2 cr compartment the 12lr compartment.
7. You decide to construct a zinc/aluminum galvanic cell in which the electrodes are connected by...
7. You decide to construct a zinc/aluminum galvanic cell in which the electrodes are connected by a wire and the solutions are connected with a salt bridge. One electrode consists of an aluminum bar in a 1.0 M solution of aluminum nitrate. The other electrode consists of zinc bar in a 1.0 M solution of zinc nitrate. Draw the complete electrochemical cell diagram and use it to answer the questions that follow. a. Which electrode is the cathode and which...
A voltaic electrochemical cell is constructed using the following reaction. The half-cell components are separated by...
A voltaic electrochemical cell is constructed using the following reaction. The half-cell components are separated by a salt bridge. Co(s) + 2Ag+(aq)Co2+(aq) + 2Ag(s) Write the reactions that take place at the anode and at the cathode, the direction in which the electrons migrate in the external circuit, and the direction the anions in the salt bridge migrate. Use smallest possible integer coefficients. If a box is not needed, leave it blank. Enter the reaction that takes place at the...
A voltaic electrochemical cell is constructed in which the anode is a Mg?+| Mg half cell...
A voltaic electrochemical cell is constructed in which the anode is a Mg?+| Mg half cell and the cathode is a Zn?-Izn half cell. The half-cell compartments are connected by a salt bridge. Write the anode reaction Write the cathode reaction. + Write the net cell reaction the Zn?+ Zn electrode the Mg2+ Mg electrode In the external circuit, electrons migrate In the salt bridge, anions migrate the Zn2+ Zn compartment the Mg2+ Mg compartment. Submit Answer
Choose the label which best describes the following:
A B C D E F G H Direction which anions move through the
salt bridge
A B C D E F G H Pt anode
The overall, balanced, spontaneous reaction occurring in this
(standard) cell is:
Cr2O72−(aq) + 6Cl−(aq)
+ 14H+(aq) → 7H2O(l) + 2Cr3+(aq) +
3Cl2(g)
7H2O(l) + 2Cr3+(aq) + 3Cl2(g) →
Cr2O72−(aq) + 6Cl−(aq)
+ 14H+(aq)
7H2O(l) + 2Cr3+(aq) + Cl2(g) →
Cr2O72−(aq) + 2Cl−(aq)
+ 14H+(aq)
2Cr3+(aq) + 3Cl2(g) →...
Enter electrons as e Use smallest possible integer coefficients for ALL reactions If a box is not needed, leave it blank. A voltaic electrochemical cell is constructed in which the anode is a Ag lAgh f-cell compartme nts are connected by a salt bridge. Write the anode reaction. Write the cathode reaction. Write the net cell reaction. In the external circuit, electrons migrate the Br2 Br electrode the Ag lAg electrode. In the salt bridge, anions migrate the Br,lBr compartmentthe...
A voltaic electrochemical cell is constructed in which the anode is a Alt|Al half cell and the cathode is a Co2+|Co half cell. The half-cell compartments are connected by a salt bridge Write the anode reaction Write the cathode reaction. Write the net cell reaction the Al3 the Co2+Co In the external circuit, electrons migrate Al electrode electrode the Co2Co compartment the Al3Al In the salt bridge, anions migrate compartment +
A voltaic electrochemical cell is constructed in which the anode is a l2l I half cell and the cathode is a Clzl CT half cell The half-cell compartments are connected by a salt bridge. Write the anode reaction. Write the cathode reaction. Write the net cell reaction In the external circuit, electrons migrate ' the Cll cr electo del the 121 r electrode In the salt bridge, anions migratethe Cl2 cr compartment the 12lr compartment.
7. You decide to construct a zinc/aluminum galvanic cell in which the electrodes are connected by a wire and the solutions are connected with a salt bridge. One electrode consists of an aluminum bar in a 1.0 M solution of aluminum nitrate. The other electrode consists of zinc bar in a 1.0 M solution of zinc nitrate. Draw the complete electrochemical cell diagram and use it to answer the questions that follow. a. Which electrode is the cathode and which...
A voltaic electrochemical cell is constructed in which the anode is a Mg?+| Mg half cell and the cathode is a Zn?-Izn half cell. The half-cell compartments are connected by a salt bridge. Write the anode reaction Write the cathode reaction. + Write the net cell reaction the Zn?+ Zn electrode the Mg2+ Mg electrode In the external circuit, electrons migrate In the salt bridge, anions migrate the Zn2+ Zn compartment the Mg2+ Mg compartment. Submit Answer
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