CONCEPT CHECK!: Which of the following are oxidation-reduction reactions? Identify the oxidizing agent and the reducing agent. a) Zn(s) + 2HCI(aq) → ZNC12(aq) + H2(g) b) Cr20,2- (aq) + 20H"(aq) → 2C104²-(aq) + H2O(t) c) 2CUCI(aq) → CuCl2(aq)+ Cu(s)

CONCEPT CHECK!: Which of the following are oxidation-reduction reactions? Identify the oxidizing agent and the reducing agent. a) Zn(s) + 2HCI(aq) → ZNC12(aq) + H2(g) b) Cr20,2- (aq) + 20H"(aq) → 2C104²-(aq) + H2O(t) c) 2CUCI(aq) → CuCl2(aq)+ Cu(s)

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Part A Which of the following reactions are redox reactions? Check all that apply. 4Li(s) + O₂(g) →→ 2Li₂O(s) Mg(s) + Fe²+ (aq) → Mg²+ (aq) + Fe(s) Pb(NO3)2(aq) + Na₂SO4 (aq) → PbSO4(s) + 2NaNO3(aq) HBr(aq) + KOH(aq) → H₂O(1) + KBr(aq) Submit Previous Answers Correct Part B Identify the oxidizing agent and the reducing agent for 4Li(s) + O₂(g) → 2Li₂O(s). Express your answers as chemical formulas separated by a comma. oxidizing agent, reducing agent Submit Part C Request Answer ΑΣΦ oxidizing agent, reducing agent Identify the oxidizing agent and the reducing agent for Mg(s) + Fe²+ (aq) → Mg²+ (aq) + Fe(s). Express your answers as chemical formulas separated by a comma. www. ? ΑΣΦ
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Identify which redox reactions occur spontaneously in the forward direction. Check all that apply. Ca2+(aq)+Zn(s) → Ca(s)+Zn2+(aq) Sn(s)+Mn2+(aq) → Sn2+(aq)+Mn(s) 2Al(s)+3Pb2+(aq) → 2Al3+(aq)+3Pb(s) 2Ag+(aq)+Ni(s) → 2Ag(s)+Ni2+(aq) Please explain the process
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Which of the following reactions are redox reactions? Check all that apply. HCI (ag) + NaOH (aq) → H2O (1) + NaCl (aq) Ba(NO3), (ag) +K2SO4 (aq) → BaSO4 (s) +2 KNO3 (ag) Zn (s) + Fe2+ (aq) → Zn²+ (aq)+Fe (s) Ca (s) + Cl2 (g) → CaCl2 (s)
Question 2 of 6 Submit Write the balanced NET ionic equation for the reaction when aqueous BaCl, and aqueous (NH,)2SO, are mixed in solution to form aqueous NH,Cl and solid BaSO4. 3C,2- Reset 1 2 3 4 5 6. 7 8 9 + (s) (1) (g) (aq) H Ba S CI • x H2O Tap here or pull up for additional resources
Question 18A 2 H2(g) + 02(g) → 2 H2O(1) AGan = -474 kJ/mol Electrode Half-Reaction Standard Reduction Potential (V) Cathode O2(9) + 4 H*(aq) + 4 e- → 2 H2O(1) ? Anode 2 H*(ag) + 2 e → H2(g) 0.00 The operation of a hydrogen fuel cell under standard conditions relies on the chemical reaction represented above. The table provides the relevant reduction half-reactions and the standard reduction potentials. Based on the information given, which of the following equations can be used to calculate the standard reduction potential, in volts, of the half-reaction occurring at the cathode? E red (cathode) -474 4 x 96,500 A E' red (cathode) -474,000 4 x 96,500 E red (cathode) = 4 x 96,500 474 4 x 96,500 D E' red (cathode) = -474,000 回く* Q Search or enter website name
Problem 10 An electrochemical cell utilizes the following redox process at 25°C: Sn"(aq) + X(s) → Sn(s) + X"(aq), X(s)|x2* (aq, 1 M)||Sn2* (aq, 1 M|Sn(s) Where X symbolizes some metal. The standard galvanic cell potential (standard emf) is: Eel = 0.14 V. What is the standard reduction half-cell potential, E°, if E° 2+ Sn"/Sn = - 0.14 V? "cell Enter your answer in the box provided with correct units and sig. fig.: The standard reduction half-cell potential E°. 2+ Answer: for X is
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