Question 1

A 1.5 V alkaline battery is constructed based on a chemical process that involves the transfer of 2 electrons from anode to cathode per reaction.What is the change in free energy?

Accepted Answer

The answer of A 1.5 V alkaline battery is constructed...

Question 2

Write the cell diagram for the reaction between Pb and VO₂⁺ions in an acidic aqueous solution that produces VO²⁺ ions and Pb²⁺ions.VO₂⁺(aq)+ Pb(s)$\to$ VO²⁺(aq)+ Pb²⁺(aq).Platinum serves as an inert electrode.

Accepted Answer

The answer of Write the cell diagram for the reaction...

Question 3

For the electrochemical cell based on the reaction of zinc metal with copper(II)ions indicated below where zinc is being oxidized,identify the components labeled as a-e.The anode is on the left; the cathode,on the right.Use the terms zinc nitrate solution,copper nitrate solution,copper electrode,zinc electrode,and salt bridge.Also,label the electrodes as + and -.

Accepted Answer

The answer of For the electrochemical cell based on the...

Question 4

How many coulombs of charge are transferred in an electrochemical cell using the following half-reactions when 350 kJ of work is done under standard conditions? Al³⁺ + 3 e^-$\to$ Al E°= -1.662 V Cu²⁺+ 2 e^-$\to$ Cu E°= 0.342 V

Accepted Answer

The answer of How many coulombs of charge are transferred...

Question 5

What is the cell potential for a cadmium/tin electrochemical cell where [Cd²⁺] = [Sn²⁺] = 1.0 M and the temperature is 298 K? For Sn,E°= -0.14 V and for Cd,E°= -0.40 V.

Accepted Answer

The answer of What is the cell potential for a...

Question 6

What constitutes a standard hydrogen electrode?

Accepted Answer

The answer of What constitutes a standard hydrogen electrode?...

Question 7

What is the standard cell potential for an electrochemical cell based on the following half-reactions? IO₃^-(aq)+ 6 H⁺(aq)+ 6 e^- $\to$I^-(aq)+ 3 H₂O( ) E° = 1.085 V Zn²⁺(aq)+ 2 e^-$\to$ Zn(s) E°= -0.762 V

Accepted Answer

The answer of What is the standard cell potential for...

Question 8

Silver tarnishes due to the formation of silver sulfide (Ag₂S).Silver polish contains aluminum metal powder in an aqueous alkaline suspension.Write the balanced net ionic reaction equation to show how silver polish works to produce silver metal and solid aluminum hydroxide,Al(OH)₃.Specify the states of matter in your equation.

Accepted Answer

The answer of Silver tarnishes due to the formation of...

Question 9

What must be true about the standard reduction potentials for the following reaction to proceed spontaneously? Cd(s)+ Sn²⁺(aq)$\to$Cd²⁺(aq)+ Sn(s)

Accepted Answer

The answer of What must be true about the standard...

Question 10

Based on the information in the table of standard reduction potentials below,explain what,if anything,will happen if a piece of solid lead is placed in an aqueous solution containing gold(III)ions.

Accepted Answer

The answer of Based on the information in the table...

Question 11

Write the cell diagram for the following reaction: Cd(s)+ Sn²⁺(aq)$\to$ Cd²⁺(aq)+ Sn(s).

Accepted Answer

The answer of Write the cell diagram for the following...

Question 12

Ozone can react with manganese(II)ions in acidic aqueous solution.Write the half-reactions,and label each as oxidation or reduction.Also,balance the equation for the redox reaction. O₃(g)+ Mn²⁺(aq)$\to$MnO₄^-(aq)+ O₂(g)

Accepted Answer

The answer of Ozone can react with manganese(II)ions in acidic...

Question 13

Based on the information in the table of standard reduction potentials below,explain what,if anything,will happen if iodine is placed in an aqueous solution containing bromide ions.

Accepted Answer

The answer of Based on the information in the table...

Question 14

Which statement regarding battery-powered electric cars is NOT correct? Currently battery-powered electric cars ________

Accepted Answer

Electric cars themselves do not use energy produced by the combustion of coal and natural gas; they run on electricity, which can be generated from a variety of sources including renewable energy. The statement incorrectly implies that electric cars directly use fossil fuels for power.

Question 15

When a reduction half-reaction is written as an oxidation,what is true about E° in terms of sign and magnitude?

Accepted Answer

The answer of When a reduction half-reaction is written as...

Question 16

What kind of chemical reaction occurs at (1)the anode in a voltaic cell and (2)at the cathode?

Accepted Answer

The answer of What kind of chemical reaction occurs at...

Question 17

Manganese(IV)oxide and chromium(III)hydroxide can react under basic aqueous conditions.Write the half-reactions,and label each as oxidation or reduction.Also,balance the equation for the redox reaction. MnO₂(s)+ Cr(OH)₃(s)$\to$ Mn₂O₃(s)+ CrO₄^2-(aq)

Accepted Answer

The answer of Manganese(IV)oxide and chromium(III)hydroxide can react under basic...

Question 18

The following reaction is called the "super iron reaction." In this reaction identify (1)the species oxidized,(2)the species reduced,and (3)the number of electrons transferred for the reaction as written,and (4)explain why it is called the "super iron reaction." 2 K₂FeO₄(aq)+ 3 Zn(s)$\to$ Fe₂O₃(s)+ ZnO(s)+ 2 K₂ZnO₂(aq)

Accepted Answer

The answer of The following reaction is called the "super...

Question 19

The following reaction is called the "super iron reaction." In this reaction,identify (1)the reducing agent,(2)the oxidizing agent,and (3)the number of electrons transferred for the reaction as written,and (4)explain why it is called the "super iron reaction." 2 K₂FeO₄(aq)+ 3 Zn(s)$\to$Fe₂O₃(s)+ ZnO(s)+ 2 K₂ZnO₂(aq)

Accepted Answer

The answer of The following reaction is called the "super...

Question 20

A 1.5 V alkaline battery is constructed based on a chemical process that involves the transfer of 2 electrons from anode to cathode per reaction.How much work can be done?

Accepted Answer

The answer of A 1.5 V alkaline battery is constructed...

Quiz 17: Electrochemistry-The Quest for Clean Energy

A 1.5 V alkaline battery is constructed based on a chemical process that involves the transfer of 2 electrons from anode to cathode per reaction.What is the change in free energy?

Write the cell diagram for the reaction between Pb and VO₂⁺ions in an acidic aqueous solution that produces VO²⁺ ions and Pb²⁺ions.VO₂⁺(aq)+ Pb(s) $\to$ VO²⁺(aq)+ Pb²⁺(aq).Platinum serves as an inert electrode.

How many coulombs of charge are transferred in an electrochemical cell using the following half-reactions when 350 kJ of work is done under standard conditions? Al³⁺ + 3 e^- $\to$ Al E°= -1.662 V Cu²⁺+ 2 e^- $\to$ Cu E°= 0.342 V

What is the cell potential for a cadmium/tin electrochemical cell where [Cd²⁺] = [Sn²⁺] = 1.0 M and the temperature is 298 K? For Sn,E°= -0.14 V and for Cd,E°= -0.40 V.

What constitutes a standard hydrogen electrode?

What must be true about the standard reduction potentials for the following reaction to proceed spontaneously? Cd(s)+ Sn²⁺(aq) $\to$ Cd²⁺(aq)+ Sn(s)

Based on the information in the table of standard reduction potentials below,explain what,if anything,will happen if a piece of solid lead is placed in an aqueous solution containing gold(III)ions.

Write the cell diagram for the following reaction: Cd(s)+ Sn²⁺(aq) $\to$ Cd²⁺(aq)+ Sn(s).

Ozone can react with manganese(II)ions in acidic aqueous solution.Write the half-reactions,and label each as oxidation or reduction.Also,balance the equation for the redox reaction. O₃(g)+ Mn²⁺(aq) $\to$ MnO₄^-(aq)+ O₂(g)

Based on the information in the table of standard reduction potentials below,explain what,if anything,will happen if iodine is placed in an aqueous solution containing bromide ions.

Which statement regarding battery-powered electric cars is NOT correct? Currently battery-powered electric cars ________

When a reduction half-reaction is written as an oxidation,what is true about E° in terms of sign and magnitude?

What kind of chemical reaction occurs at (1)the anode in a voltaic cell and (2)at the cathode?

Manganese(IV)oxide and chromium(III)hydroxide can react under basic aqueous conditions.Write the half-reactions,and label each as oxidation or reduction.Also,balance the equation for the redox reaction. MnO₂(s)+ Cr(OH)₃(s) $\to$ Mn₂O₃(s)+ CrO₄^2-(aq)

A 1.5 V alkaline battery is constructed based on a chemical process that involves the transfer of 2 electrons from anode to cathode per reaction.How much work can be done?

Quiz 17: Electrochemistry-The Quest for Clean Energy

A 1.5 V alkaline battery is constructed based on a chemical process that involves the transfer of 2 electrons from anode to cathode per reaction.What is the change in free energy?

Write the cell diagram for the reaction between Pb and VO2+ ions in an acidic aqueous solution that produces VO2+ ions and Pb2+ ions.VO2+(aq)+ Pb(s) →\to→ VO2+(aq)+ Pb2+(aq).Platinum serves as an inert electrode.

How many coulombs of charge are transferred in an electrochemical cell using the following half-reactions when 350 kJ of work is done under standard conditions? Al3+ + 3 e- →\to→ Al E°= -1.662 V Cu2+ + 2 e- →\to→ Cu E° = 0.342 V

What is the cell potential for a cadmium/tin electrochemical cell where [Cd2+] = [Sn2+] = 1.0 M and the temperature is 298 K? For Sn,E°= -0.14 V and for Cd,E° = -0.40 V.

What constitutes a standard hydrogen electrode?

What is the standard cell potential for an electrochemical cell based on the following half-reactions? IO3-(aq)+ 6 H+(aq)+ 6 e- →\to→ I-(aq)+ 3 H2O( ) E° = 1.085 V Zn2+(aq) + 2 e- →\to→ Zn(s) E° = -0.762 V

What must be true about the standard reduction potentials for the following reaction to proceed spontaneously? Cd(s)+ Sn2+(aq) →\to→ Cd2+(aq)+ Sn(s)

Based on the information in the table of standard reduction potentials below,explain what,if anything,will happen if a piece of solid lead is placed in an aqueous solution containing gold(III)ions.

Write the cell diagram for the following reaction: Cd(s)+ Sn2+(aq) →\to→ Cd2+(aq)+ Sn(s).

Ozone can react with manganese(II)ions in acidic aqueous solution.Write the half-reactions,and label each as oxidation or reduction.Also,balance the equation for the redox reaction. O3(g)+ Mn2+(aq) →\to→ MnO4-(aq)+ O2(g)

Based on the information in the table of standard reduction potentials below,explain what,if anything,will happen if iodine is placed in an aqueous solution containing bromide ions.

Which statement regarding battery-powered electric cars is NOT correct? Currently battery-powered electric cars ________

When a reduction half-reaction is written as an oxidation,what is true about E° in terms of sign and magnitude?

What kind of chemical reaction occurs at (1)the anode in a voltaic cell and (2)at the cathode?

Manganese(IV)oxide and chromium(III)hydroxide can react under basic aqueous conditions.Write the half-reactions,and label each as oxidation or reduction.Also,balance the equation for the redox reaction. MnO2(s)+ Cr(OH)3(s) →\to→ Mn2O3(s)+ CrO42-(aq)

A 1.5 V alkaline battery is constructed based on a chemical process that involves the transfer of 2 electrons from anode to cathode per reaction.How much work can be done?

Write the cell diagram for the reaction between Pb and VO₂⁺ions in an acidic aqueous solution that produces VO²⁺ ions and Pb²⁺ions.VO₂⁺(aq)+ Pb(s) $\to$ VO²⁺(aq)+ Pb²⁺(aq).Platinum serves as an inert electrode.

How many coulombs of charge are transferred in an electrochemical cell using the following half-reactions when 350 kJ of work is done under standard conditions? Al³⁺ + 3 e^- $\to$ Al E°= -1.662 V Cu²⁺+ 2 e^- $\to$ Cu E°= 0.342 V

What is the cell potential for a cadmium/tin electrochemical cell where [Cd²⁺] = [Sn²⁺] = 1.0 M and the temperature is 298 K? For Sn,E°= -0.14 V and for Cd,E°= -0.40 V.

What must be true about the standard reduction potentials for the following reaction to proceed spontaneously? Cd(s)+ Sn²⁺(aq) $\to$ Cd²⁺(aq)+ Sn(s)

Write the cell diagram for the following reaction: Cd(s)+ Sn²⁺(aq) $\to$ Cd²⁺(aq)+ Sn(s).

Ozone can react with manganese(II)ions in acidic aqueous solution.Write the half-reactions,and label each as oxidation or reduction.Also,balance the equation for the redox reaction. O₃(g)+ Mn²⁺(aq) $\to$ MnO₄^-(aq)+ O₂(g)

Manganese(IV)oxide and chromium(III)hydroxide can react under basic aqueous conditions.Write the half-reactions,and label each as oxidation or reduction.Also,balance the equation for the redox reaction. MnO₂(s)+ Cr(OH)₃(s) $\to$ Mn₂O₃(s)+ CrO₄^2-(aq)