Half-reaction E° (V) Ag*(aq) +e→Ag(s) 0.799 V Ni?*(aq) + 2e-Ni(s) -0.250 V Mg2 (aq) + 2e Mg(s)-2.370 V (a) Identify the strongest oxidizing agent and the weakest oxidizing agent. Strongest OA Weakest OA Enter formulas: (b) Identify the strongest reducing agent and the weakest reducing agent. Strongest RA Weakest RA Enter formulas: (c) Will Ag (aq) oxidize Mg(s) to Mg-"(aq)? (d) Identify all species that can be reduced by Ni(s). If none, leave box blank.

Half-reaction E° (V) Ag(aq) +e→Ag(s) 0.799 V Ni?(aq) + 2e-Ni(s) -0.250 V Mg2 (aq) + 2e Mg(s)-2.370 V (a) Identify the strongest oxidizing agent and the weakest oxidizing agent. Strongest OA Weakest OA Enter formulas: (b) Identify the strongest reducing agent and the weakest reducing agent. Strongest RA Weakest RA Enter formulas: (c) Will Ag (aq) oxidize Mg(s) to Mg-"(aq)? (d) Identify all species that can be reduced by Ni(s). If none, leave box blank.

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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(a) Define molar conductivity of a substance and describe how for weak and strong electrolytes, molar conductivity changes with concentration of solute. How is such change explained?(b) A voltaic cell is set up at 25 °C with the following half-cells:Ag+(0.001 M) | Ag and Cu2+(0.10 M) | Cu What would be the voltage of this cell?(E0cell = 0 .46 V)
For the following reaction, write the half-reactions, stating which is the reduction half-reaction andwhich is the oxidation half-reaction. 2H+ + H2O2 (el) + 2I- (aq) → I2 (s) + 2H2O (el)
Reduction potential of Mg2+ is -2.37 V. Reduction Potential of Fe2+ is 0.44 V. Based on the reaction below what is the electrical energy? Mg(s) + Fe2+(aq) + Fe(s) Fe2+(aq) = 0.18 M ; Mg2+(aq) = 0.53M
Consider the following half-reactions: Half-reaction E° (V) 2+ Hg"(aq) + 2e → Hg(1) 0.855V Co**(aq) + 2e → Co(s) -0.280V 2+ Fe"(aq) + 2e → Fe(s) |-0.440v (1) The strongest oxidizing agent is: enter formula (2) The weakest oxidizing agent is: (3) The weakest reducing agent is: (4) The strongest reducing agent is: (5) Will Hg*(aq) oxidize Fe(s) to Fe2*(aq)?| (6) Which species can be oxidized by Co2*(aq)? If none, leave box blank.
Question 4: (a) What are redox reactions? Explain the difference between a gal- vanic and an electrolytic cell. Consider the cell described below: Al | AP"(1.00M) | Pb³"(1.00M) | Pb Calculate the cell potential after the reaction has operated long enough for the [Al"] to have changed by 0.60 mol/L. (Assume T = 25°C.) (b) Many elements have been synthesized by bombarding relatively heavy atoms with high-energy particles in particle accelerators. Complete the fol- lowing nuclear equations, which have been used to synthesize elements. U + C-→ Cf + Cf + 'B Lr + + He Bk + in + 6 n 10 Db + 4 in 103
Consider the following half-reactions: Half-reaction E° (V) F2(g) + 2e → 2F*(aq) 2.870V Co2+*(aq) + 2e → Co(s) |-0.28OV 2+ Mg"(aq) + 2e → Mg(s) -2.37OV (1) The weakest oxidizing agent is: enter formula (2) The strongest reducing agent is: (3) The strongest oxidizing agent is: (4) The weakest reducing agent is: (5) Will Mg(s) reduce F2(g) to F"(aq)? (6) Which species can be reduced by Co(s)? If none, leave box blank.
4. A cell uses the following reaction: a. Zn (s) + 2 H* (aq) → Zn²* (aq) + H2 (g) (a) Determine the emf of the cell under standard conditions. (b) When PH,=1.0 atm and [Zn²*] = 1.0 M, the cell potential is 0.560 V. Determine the concentration of H* in the cathode compartment. Zn2“(aq) + 2e¯ → Zn(s) -0.763 2H*(aq) + 2e¯ –→ H2(g) b.
A galvanic cell is prepared according to the redox reaction shown below. A voltmeter connected to this galvanic cell under standard conditions reads 0.45 V, and AG, xn = -79 kJ/mol. If the concentration of Fe2+ is increased to 2.0 M, then Ecell will and AGrxn will be than AGxn- Fe(s) + 2H*(aq) Fe2* + H2(g) decrease, less negative O decrease, more negative O increase, more negative O increase, less negative
A galvanic cell is constructed in which the overall reac- tion is Cr,O} (aq) + 14 H¿O*(aq) + 6 I (aq) → 2 Cr* (aq) 1 3 I,(s) | 21 H,0(€) (a) Calculate AE° for this cell. (b) At pH 0, with [C»O3¯] = 1.5 M and [I-] = 0.40 M, the cell potential is found to equal 0.87 V. Calculate the concentration of Cr³*(aq) in the cell.
A galvanic cell is constructed in which the overall reac- tion is Pb(s) + 2 H;O* (aq) → Pb²+ (aq) + H2 (g) + 2 H20(e) (a) Calculate AE° for this cell. (b) Chloride ions are added until PbCl, precipitates at the anode and [CI-] reaches 0.15 M. The cell potential is then measured to be 0.22 V at pH = 0 and PH, 1.0 atm. Calculate [Pb2+] under these conditions. (c) Calculate the solubility product constant Kp of PbCl2.
Write a balanced equation for the overall cell reaction in the following galvanic cell and tell why inert electrodes are required at the anode and cathode. Pt(s) | Br (aq) | Br₂ (1) || Cl; (g) | Cl(aq) | Pt(s)
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