Concept explainers
Which of the following are
a.
b.
c.
Want to see the full answer?
Check out a sample textbook solutionChapter 15 Solutions
Basic Chemistry
- (7.1a) Complete and balance the following by ion-electron method. Reactions are taking place in acidic solution. a) Cu(s) + NO3 (aq) - Cu*2(aq) + NO2(g) + NO29) Analysis: Oxidation-Half reation: Balancing atoms & charges: Cu(s) Cu*2, (aq) e Reduction-Half reation: Balancing O & H and charges: H* + NO3 (aq) e NO2(g) + 1 H20 Balancing electrons lost & gained and balancing the equation: Cu(s) NO3 (aq) + H* - Cu*(aq) NO2(g) H20arrow_forward(7.1b) Complete and balance the following by ion-electron method. Reactions are taking place in acidic solution. b) Mn*2(aq) + BiO3 (aq) Bi* (aq) + Mn04 (aq) Analysis: Oxidation-Half reation: Balancing atoms & charges: Mn*2(aq) Mn04 (aq) H20 - + H* + e Reduction-Half reation: Balancing atoms and charges: BiO3 (aq) H* + Bi* (aq) e H20 Balancing electrons lost & gained Multiply oxidation-half reaction by e's Multiply reduction-half reaction by es Final balanced equation: Continue nextarrow_forwardConsider the unbalanced reaction below occurring in acidic solution: PbO₂ (s) + (aq) Pb2+ (aq) + 1₂(5) Which of the following reactions is the properly balanced net redox reaction? O PbO₂(s) + 21-(aq) + 4H*(aq) O PbO₂(s) +41-(aq) + 4H*(aq) O PbO₂(s) +1-(aq) + 2H*(aq) - O PbO₂(s) + 21-(aq) - 1 Pb2+ (aq) + 12(s) + 2H₂O() Pb2+ (aq) +212(s) + 2H₂O() Pb2+ (aq) + 1₂(s) + H₂O() Pb2+ (aq) + 1₂(s) + O₂(g)arrow_forward
- Which of the following is NOT a redox reaction? CO32-(aq) + HSO4-(aq) ==> HCO3-(aq) + SO42-(aq) 2Al(s) + 12H+(aq) + 3SO42-(aq) ==> 2Al3+(aq) + 3SO2(g) + 6H2O(I) 2H2(g) + O2(g) ==> 2H2O(I) 2NaI(s) + Br2(I) ==> 2NaBr(s) + I2(s)arrow_forward7.67 Ammonia may be used as the anodic reactant in a fuel cell. The reactions occurring at the electrodes are NH3(g) + 30H (ao) = N2(g) + 3H,O(1) + 3e™ O2(g) + 2H2O(1) + 4e 4ОН (ао) What is the electromotive force of this fuel cell at 25 °C?arrow_forwardFill in the blanks: (7.14) In the electrolysis of CUSO4, how much copper is plated out on the cathode by a current of a 0.75A in 10 minutes? (Cu 63.546 g/mol) Analysis/Strategy: ampere & time coulombs ® mol e¯ (or Faraday) ® mol Cu (R mass of Cu Reduction half-reaction of copper solution to copper metal: Cu*²(aq) + e¯ ® Cu(s) copper solution, CUSO4, has the ions: [Cu*2 SOq] Answer: The mass of copper plated out is g Cu. (3 sig fig)arrow_forward
- Complete and balance the following redox reaction in basic solution Zn(s) + 4 OH (aq) Zn(OH), +2 e 04- 02 04+ 1 4. 6. 8 9. 02 (s) (1) (g) (aq) H* H30* e Zn H H20 OH Reset • z H20 Delete 7. LO 3. question 9arrow_forward9. 8. m Balance the following redox reaction in basic solution. Mn0,(s)+Br,(1) MnO,(aq)+Br (aq) Mno, (s) + Br, (1) - Mno, (aq) + Br (aq) 00arrow_forwardFill in the blanks: (7.13) Using a current of 4.75 A, how many minutes does it take to plate a sculpture with 1.50 g of Cu from a CuS04 solution? (Cu 63.546 g/mol) Analysis/Strategy: mass of Cu ® mol Cu ® mol e" (or Faraday) ® coulombs ® time in minutes (given current in amperes) Reduction half-reaction of copper solution to copper metal: Cu*2(aq) · + e¯ ® Cu(s) copper solution, CUSO4, has the ions: [Cu*2_SOq] Answer: The time needed to plate out a sculpture is minutes. (3 sig fig)arrow_forward
- Is this reaction endothermic or exothermic when the chromate ion is the reactant? 2H +(aq) + 2CrO42-(aq)Cr2O72-(aq) + H2O(l)arrow_forwardComplete and balance the following redox reaction in basic solution Zn(s) → Zn(OH),*(aq) + H,(g) 4 4- 2- D2+ 3+ 4+ + 1 2 3 4 6. 7 8 9. O3 O6 O7 (s) (1) (g) (aq) + e Zn H* OH Reset • x H,0 Delete 9. 4. 3. 2.arrow_forward10. Balance the following Redox reactions. (b) Zn(s)+NO - 3 (aq)=NH3 (aq) +Zn2+ (aq) (c) MnO4 2- (aq)=MnO4 2- (aq)+MnO2 (s) (in base) (d) Br2 (l)+SO2 (g)=Br- (aq)+SO4 2- (aq) (in acid)arrow_forward
- ChemistryChemistryISBN:9781305957404Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCostePublisher:Cengage LearningChemistryChemistryISBN:9781259911156Author:Raymond Chang Dr., Jason Overby ProfessorPublisher:McGraw-Hill EducationPrinciples of Instrumental AnalysisChemistryISBN:9781305577213Author:Douglas A. Skoog, F. James Holler, Stanley R. CrouchPublisher:Cengage Learning
- Organic ChemistryChemistryISBN:9780078021558Author:Janice Gorzynski Smith Dr.Publisher:McGraw-Hill EducationChemistry: Principles and ReactionsChemistryISBN:9781305079373Author:William L. Masterton, Cecile N. HurleyPublisher:Cengage LearningElementary Principles of Chemical Processes, Bind...ChemistryISBN:9781118431221Author:Richard M. Felder, Ronald W. Rousseau, Lisa G. BullardPublisher:WILEY