Chemistry Chemistry Practice Problems Solutions Library

Redox Reaction Solutions Library

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66 solutions

Redox Reaction

Q. Which of the following metals is the best reducing agent?A) CrB) AlC) MnD) Cd

Solved • Mar 20, 2020

Redox Reaction

Q. Which of the following reagents would oxidize Cu to Cu2+, but not Au to Au3+?A) Br2B) CoC) Co2+D) Br-E) Ca2+F) Ca

Solved • Mar 18, 2020

Redox Reaction

Q. Rank these species by their ability to act as an oxidizing agent.Mg2+Zn2+Cu2+F2

Solved • Mar 12, 2020

Redox Reaction

Q. An illustration of an ethanol fuel cell is given below:The half reactions (written as reductions) for the fuel cell at 25 °C are given below.O2 (g)...

Solved • Jan 6, 2020

Redox Reaction

Q. A chromium-plated steel bicycle handlebar is scratched. Will rusting of the iron in the steel be encouraged or retarded by the chromium? Briefly ex...

Solved • Jan 6, 2020

Redox Reaction

Q. It would not be wise to store a chromium(III) nitrate solution in an aluminum container. Why?a. Cr3+ is a stronger reducing agent than Al 3+b. Al3+...

Solved • Jul 9, 2019

Redox Reaction

Q. Heart pacemakers are often powered by lithium-silver chromate "button" batteries. The overall cell reaction is:2Li(s) + Ag2CrO4(s)  →  Li2CrO4(s) +...

Solved • Jan 3, 2019

Redox Reaction

Q. The standard reduction potential for the reduction of RuO4 - (aq) to RuO4 2 -  (aq) is +0.59 V.Use Appendix E in the textbook. Which of the followi...

Solved • Jan 3, 2019

Redox Reaction

Q. From each of the following pairs of substances, use data in Appendix E in the textbook to choose the one that is the stronger oxidizing agent.(a) C...

Solved • Jan 3, 2019

Redox Reaction

Q. You may want to reference (Pages 860 - 867)Section 20.4 while completing this problem.Based on the data in Appendix E in the textbook, which of the...

Solved • Jan 3, 2019

Redox Reaction

Q. Decide whether or not Cr dissolves in 1 M HIO3.

Solved • Jan 3, 2019

Redox Reaction

Q. Decide whether or not Au dissolves in 1 M HIO3.

Solved • Jan 3, 2019

Redox Reaction

Q. Label the anode and cathode, indicate the direction of electron flow and the species present in each solution for each of the following overall red...

Solved • Jan 3, 2019

Redox Reaction

Q. Which metal dissolves in HNO3 but not in HCl?(a) Fe          (b) Au          (c) Ag

Solved • Jan 3, 2019

Redox Reaction

Q. Consider only the species (at standard conditions)Br -, Br2, H+, H2, La3+, Ca, Cdin answering the following questions. Give reasons for your answer...

Solved • Dec 3, 2018

Redox Reaction

Q. Use the emf series (Appendix D) to arrange each set of species.(b) In order of increasing strength as reducing agents: Hg, Fe, Sn

Solved • Nov 28, 2018

Redox Reaction

Q. Consider the following balanced redox reaction:2CrO2−(aq) + 2H2O(l) + 6ClO−(aq) ⟶ 2CrO42−(aq) + 3Cl2(g) + 4OH−(aq)(d) Which species is the reducing...

Solved • Nov 27, 2018

Redox Reaction

Q. Study this chemical reaction: Pt + O2 → PtO2 Then, write balanced half-reactions describing the oxidation and reduction that happen in this reaction.

Solved • Oct 8, 2018

Redox Reaction

Q. 2I- + Cl2 → I2 + 2Cl-In the above redox reaction, use oxidation numbers to identify the element oxidized, the element reduced, the oxidizing agent ...

Solved • Oct 3, 2018

Redox Reaction

Q. Ag2O + Cu + H2O → 2Ag + Cu(OH)2In the above redox reaction, use oxidation numbers to identify the element oxidized, the element reduced, the oxidiz...

Solved • Oct 3, 2018

Redox Reaction

Q. Cr3+ + 3Cu+ → 3Cu2+ + CrIn the above redox reaction, use oxidation numbers to identify the element oxidized, the element reduced, the oxidizing age...

Solved • Oct 3, 2018

Redox Reaction

Q. Based on the data presented below, which is the strongest reducing agent? (a) Fe3+ (b) Fe2+ (c) Br- (d) Al3- (e) AI (s)

Solved • Jul 9, 2018

Redox Reaction

Q. Which of the following is the  weakest oxidizing agent?

Solved • Jun 19, 2018

Redox Reaction

Q. Predict the relative reducing power of the group 2A elements. Rank from strongest to weakest reducing agent. To rank items as equivalent, overlap t...

Solved • Mar 22, 2018

Redox Reaction

Q. Which of the following is the STRONGEST reducing agent?a. Ba(s)b. Li+ (aq)c. Na(s)d. Cr2+ (aq)e. Li(s)

Solved • Mar 22, 2018

Redox Reaction

Q. Break down reaction into its half-reactions.4Fe + 3O2 → 2Fe2O3

Solved • Mar 22, 2018

Redox Reaction

Q. Indicate the half-reaction occurring at Anode, and Cathode.2Ag+(aq) + Pb(s) → 2Ag(s) + Pb 2+(aq)

Solved • Mar 20, 2018

Redox Reaction

Q. Which of the following metals is the best reducing agent?a. Crb. Mnc. Nid. Li

Solved • Mar 20, 2018

Redox Reaction

Q. Which of the following metal cations is the best oxidizing agent?a. Cu+b. Zn2+c. Cd2+d. Cr3+ 

Solved • Mar 20, 2018

Redox Reaction

Q. For the reaction:Ni2+(aq) + Mg(s) → Ni(s) + Mg 2+(aq)a. Indicate the half-reaction occurring at Anode.b. Indicate the half-reaction occurring at Ca...

Solved • Mar 15, 2018

Redox Reaction

Q. Which of the following metal cations is the best oxidizing agent?a. Co+2b. Zn+2c. Fe+2d. Fe+3

Solved • Mar 13, 2018

Redox Reaction

Q. Separate this redox reaction into its component half-reactions.3O2 + 4Co → 2Co 2O3 

Solved • Feb 20, 2018

Redox Reaction

Q. Separate this redox reaction into its component half-reactions.O2 + 2Cu → 2CuO

Solved • Feb 19, 2018

Redox Reaction

Q. Separate this redox reaction into its component half-reactions.O2 + 2Mg → 2MgO

Solved • Feb 19, 2018

Redox Reaction

Q. 2NO3-(aq) + 8H+(aq) + 3Cu(s) → 2NO(g) + 4H 2O(l) + 3Cu2+(aq)i)  Indicate the half-reaction occurring at Anode. Express your answer as a chemical eq...

Solved • Feb 15, 2018

Redox Reaction

Q. Separate this redox reaction into its balanced component half-reactions.Cl2 + 2Cu → 2CuClOxidation half-reaction:Reduction half-reaction:

Solved • Jan 4, 2018

Redox Reaction

Q. Separate this redox reaction into its component half-reactionsCl2 + 2Cs → 2CsClOxidation half reaction:Reduction half reaction:

Solved • Jan 4, 2018

Redox Reaction

Q. Rank these species by their ability to act as an oxidizing agent from Best oxidizing agent to least oxidizing agent.Al3+, Au3+, Fe2+, Cu+

Solved • Dec 19, 2017

Redox Reaction

Q. Rank these species by their ability to act as an oxidizing agent. Au3+, Ca2+, Pb2+, Fe2+

Solved • Dec 19, 2017

Redox Reaction

Q. Rank these species by their ability to act as an oxidizing agent.Sn2+, Cr3+, Li+, Ag+

Solved • Dec 19, 2017

Redox Reaction

Q. Rank these species by their ability to act as an oxidizing agent (from best oxidizing agent to poorest).Ag+, I2, Ca2+, Cr3+

Solved • Dec 19, 2017

Redox Reaction

Q. Rank these species by their ability to act as an oxidizing agent.Mg2+, Zn2+, Sn2+, Ag+

Solved • Dec 19, 2017

Redox Reaction

Q. Rank these species by their ability to act as an oxidizing agent.Mg2+, Zn2+, Cu+, F2

Solved • Dec 19, 2017

Redox Reaction

Q. Rank these species by their ability to act as an oxidizing agent.Cu+, Cr2+,Cl2, Na+Rank from best oxidizing agent to poorest oxidizing agent.

Solved • Dec 19, 2017

Redox Reaction

Q. Write a balanced overall reaction from these unbalanced half-reactions.i) In → In3+ii) Cd2+ → Cd

Solved • Sep 23, 2017

Redox Reaction

Q. Identify the oxidation and reduction steps in the following reaction:4 Fe + 3 O2 → 2 Fe2O3 

Solved • Apr 20, 2017

Redox Reaction

Q. Identify the oxidation and reduction steps in the following reaction: 4Fe +3O2 → 2Fe2O3  

Solved • Apr 20, 2017

Redox Reaction

Q. Which of the following is the strongest reducing agent?                                                                E° Sn2+(aq) + 2e- → Sn°     ...

Solved • Aug 29, 2016

Redox Reaction

Q. Which of the following is the weakest oxidizing agent?                                                                      E° Sn2+ + 2e- → Sn°   ...

Solved • Aug 29, 2016

Redox Reaction

Q. Consider the following standard reduction potentials in acid solution:                                                             E°(V) Al3+ + 3e...

Solved • Aug 28, 2016

Redox Reaction

Q. Given the overall redox reaction: Fe2+(aq) + Ce4+(aq) → Fe3+(aq) + Ce3+(aq)  Identify the two half-reactions. Oxidation half-reaction              ...

Solved • Aug 9, 2016

Redox Reaction

Q. Rank the following half reactions (1-5) in order of oxidizing ability, from strongest to weakest._______   K → K+ + e–                             ...

Solved • May 17, 2016

Redox Reaction

Q. Two metals are represented by the symbols L and Z. Which is the best oxidizing agent listed?(A) L(B) L2+(C) Z(D) Z+

Solved • May 10, 2016

Redox Reaction

Q. Which of these ions is the best reducing agent?  Standard Reduction Potentials                   E°      Fe 3+ (aq) + e– → Fe 2+ (aq)            ...

Solved • Apr 26, 2016

Redox Reaction

Q. Which metal is the best reducing agent? a. Mn b. Al c. Ni d. Cr

Solved • Apr 8, 2016

Redox Reaction

Q. Which metal cation is the best oxidizing agent?a. Pb2+b. Cr3+c. Fe2+d. Sn2+

Solved • Apr 8, 2016

Redox Reaction

Q. Of the substances below, which is the weakest reducing agent?a) Na (s)b) K+ (aq)c) Cl2 (g)d) Br– (aq)e) Fe2+ (aq)

Solved • Apr 1, 2016

Redox Reaction

Q. Which substance below is the strongest reducing agent? See the attached table of standard reduction potentials.a) Li+ (aq)b) Li (s)c) F– (aq)d) F2 ...

Solved • Apr 1, 2016

Redox Reaction

Q. Consider the following standard reduction potentials:Al3+ + 3e –  → Al (s)                  E ̊red = –1.66AgBr (s) + e – → Ag (s) + Br–    E ̊red =...

Solved • Apr 1, 2016

Redox Reaction

Q. Which of the following chemical species is the strongest reducing agent based on the following information:F2(g) + 2 e – → 2 F– (aq)           E°ce...

Solved • Apr 1, 2016

Redox Reaction

Q. You have an aqueous solution of FeCl 3  and CdCl2 . Using the table of standard reduction potentials, what metal ions or could you add to this solu...

Solved • Mar 17, 2016

Redox Reaction

Q. Given the overall redox reaction:  Fe2+(aq) + Ce4+(aq) → Fe3+(aq) + Ce3+(aq) Identify the two half-reactions Oxidation half-reaction             ...

Solved • Mar 8, 2016

Redox Reaction

Q. Of the substances below, which is the weakest reducing agent?a. Na (s)b. K+ (aq)c. Cl2 (g)d. Br - (aq)e. Fe2+ (aq)

Solved • Feb 10, 2016

Redox Reaction

Q. Use the standard reduction potentials below to determine which element or ion is the best reducing agent. Pd2+ (aq) + 2 e –       →      Pd (s) E°...

Solved • Feb 3, 2016

Redox Reaction

Q. Which of the following reactions may occur at the anode? a. Ga3+ (aq) + 3 e–       →      Ga (s) b. Cu2+ (aq) + 2 e–      →       Cu (s) c. 2 Cl...

Solved • Feb 3, 2016

Redox Reaction

Q. Which of the following substances is the strongest oxidizing agent given the standard reduction potential? A. +2.71B. +0.40C. 0.00D. -0.81

Solved • Feb 2, 2016