Concept explainers
Balance the following half-reactions.
Want to see the full answer?
Check out a sample textbook solutionChapter 14 Solutions
EBK INTRODUCTION TO CHEMISTRY
- Draw a diagram of each cell. Label the anode, the cathode, the species in each half-cell solution, the direction of electron movement in an external circuit, and thedirection of movement of ions within the cell. (a) Cu(s) | Cu2+(aq) || Fe2+(aq) |Fe(s) (b) Pt(s) | H2O2(aq), H+(aq) || Fe2+(aq), Fe3+(aq) | Pt(s)arrow_forwardConsider the following galvanic cell: Calculate the concentrations of Ag+(aq) and Ni2+(aq) once the cell is dead.arrow_forwardWhat is the standard cell potential you would obtain from a cell at 25C using an electrode in which Hg22+(aq) is in contact with mercury metal and an electrode in which an aluminum strip dips into a solution of Al3+(aq)?arrow_forward
- Consider the following cell running under standard conditions: Fe(s)Fe2+(aq)Al3+(aq)Al(s) a Is this a voltaic cell? b Which species is being reduced during the chemical reaction? c Which species is the oxidizing agent? d What happens to the concentration of Fe3+(aq) as the reaction proceeds? e How does the mass of Al(s) change as the reaction proceeds?arrow_forwardFor the reaction Cu2+(aq) + Zn(s) → Cu(s) + Zn2+ (aq), why can’t you generate electric current by placing a piece of copper metal and a piece of zinc metal in a solution containing CuCl2(aq) and ZnCl2(aq)?arrow_forwardA voltaic cell is constructed using the reaction of chromium metal and iron(II) ions. 2 Cr(s) + 3 Fe2+(aq) 2 Cr3+(aq) + 3 Fe(s) Complete the following sentences: Electrons in the external circuit flow from the ________ electrode to the ______ electrode. Negative ions move in the salt bridge from the ________ half-cell to the ______ half-cell. The half-reaction at the anode is _______ and that at the cathode is ________.arrow_forward
- A potential of 0.142 V is recorded (under standard conditions) for a voltaic cell constructed using the following half reactions: Cathode: Pb2+(aq) + 2 e Pb(s) Anode: PbCl2(s) + 2 e Pb(s) + 2 Cl(aq) Net: Pb2+(aq) + 2 Cl(aq) PbCI2(s) (a) What is the standard reduction potential for the anode reaction? (b) Calculate the solubility product, Ksp, for PbCl2.arrow_forwardThe balanced half-reaction for Br2 BrO3 in basic solution is (a) 3 OH + Br2 2BrO3+ H2O + e (b) 12 OH + Br2 2 BrO3 + 6 H2O + 10 e (c) e + OH + Br2 2 BrO3 + H2O (d) l0e + Br2 + 6H2O 2BrO3 +6OHarrow_forwardA voltaic cell is constructed in which one half-cell consists of a silver wire in an aqueous solution of AgNO3.The other half cell consists of an inert platinum wire in an aqueous solution containing Fe2+(aq) and Fe3+(aq). (a) Calculate the cell potential, assuming standard conditions. (b) Write the net ionic equation for the reaction occurring in the cell. (c) Which electrode is the anode and which is the cathode? (d) If [Ag+] is 0.10 M, and [Fe2+] and [Fe3+] are both 1.0 M, what is the cell potential? Is the net cell reaction still that used in part (a)? If not, what is the net reaction under the new conditions?arrow_forward
- For each of the following electrochemical cells, write equations for the oxidation and reduction half-reactions and for the overall reaction. (a) Cu(s)|Cu2+(aq)||Fe3+(aq), Fe2+(aq)|Pt(s) (b) Pb(s)|PbSO4(s)|SO42(aq)||Fe3+(aq), Fe2+(aq)|Pt(s)arrow_forwardWrite balanced equations for the following half-reactions. Specify whether each is an oxidation or reduction. (a) Cr(s) Cr3+(aq)(in acid) (b) AsH3(g) As(s)(in acid) (c) VO3(aq) V2+(aq)(in acid) (d) Ag(s) Ag2O(s)(in base)arrow_forward
- Chemistry: Principles and PracticeChemistryISBN:9780534420123Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward MercerPublisher:Cengage LearningChemistryChemistryISBN:9781305957404Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCostePublisher:Cengage Learning
- Chemistry: An Atoms First ApproachChemistryISBN:9781305079243Author:Steven S. Zumdahl, Susan A. ZumdahlPublisher:Cengage LearningChemistry & Chemical ReactivityChemistryISBN:9781133949640Author:John C. Kotz, Paul M. Treichel, John Townsend, David TreichelPublisher:Cengage LearningChemistry & Chemical ReactivityChemistryISBN:9781337399074Author:John C. Kotz, Paul M. Treichel, John Townsend, David TreichelPublisher:Cengage Learning