
Chemistry
10th Edition
ISBN: 9781305957404
Author: Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher: Cengage Learning
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Transcribed Image Text:When balancing equations for redox reactions in acidic solutions, which of the steps
comes before you balance each half-reaction for O by adding H20?
O Balance each half-reaction for charge by adding electrons
Balance each half-reaction for H by adding H*
Balance each half-reaction for all elements except H and O
Write skeletal equations for the oxidation and reduction half-reactions
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- 6. Consider the following half-reactions: F2(g) +2 e-→2 F-(aq) Cu2*(aq)+2 e-→ Cu(s) Sn²*(aq)+2 e –→ Sn(s) Al3*(aq) +3 e -→ Al(s) Na*(aq) +e-→ Na(s) Which of the above elements or ions will reduce Sn2+(aq)? a. Cu(s) and A13*(aq) b. F-(aq) and Cu(s) c. F2(g) and Cu2*(aq) d. Al(s) and Na(s) e. Al3*(aq) and Na*(aq) E° = +2.87 V E° =+0.34 V E° = -0.14 V %3D E° =-1.66 V E° =-2.71 V %3Darrow_forwardFor a particular redox reaction, BrO−BrO− is oxidized to BrO−3BrO3− and Fe3+Fe3+ is reduced to Fe2+Fe2+. Complete and balance the equation for this reaction in basic solution. Phases are optional. balanced redox reaction: BrO−+Fe3+⟶BrO3-+Fe2+arrow_forwardBalance this equation for the reaction occurring in an acidic solution. HNO2 + MnO4 → Mn²+ + NO3 HNO₂ + MnO4 → Mn²+ + NO3 O 3HNO2 + MnO4 → Mn2+ + 3NO3 + H₂O + H+ 5HNO₂ + 2MnO4+H*→ 2Mn²+ + 5NO3¯ + 3H₂O HNO₂ + MnO4 +5H+ → Mn2+ + NO3 + 3H₂Oarrow_forward
- Write a balanced overall reaction from these unbalanced half-reactions. Cu⟶Cu2+Cu⟶Cu2+ Ag+⟶Agarrow_forwardWrite the balanced molecular and net ionicequations for the reaction between aluminum metal and silver nitrate. Identify the oxidation and reduction half-reactions.arrow_forwardBalance the following half-reactions by adding the appropriate number of electrons (e-). Then, classify each reaction as an oxidation or reduction half-reaction. Note that for each of the four reactions, one of the gray boxes will be left blank and the other will be filled with electron(s). Use the symbol e- to represent an electron. Part 4 + 12(s) + 6H2O(1) > 2I0-3 + 12H+(aq) + --arrow_forward
- Balance the half- reaction in basic solution. Use e as the symbol for an electron. half - reaction: Balance the half-reaction in basic solution. Use e as the symbol for an electron. half-reaction: SOS₂0arrow_forward10. Balance the following redox reaction using the half-reaction method and tell how many electrons are transferred in the reaction. Ag(s) + CN (aq) +O2 (g) → Ag(CN), + H2O (BASIC medium) HINT: CN- is neither oxidized nor reducedarrow_forwardWrite a balanced half-reaction for the reduction of nitrate ion (NO3) to gaseous nitrogen dioxide (NO₂) in acidic aqueous solution. Be sure to add physical state symbols where appropriate. 0 ロ→ロ D₁ X Śarrow_forward
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