26 Consider the standard electrode potentials of the following reactions. Cr3+(aq) + 3e--Cr(s) Cd2+(aq) + 2e-- Cd(s) What is the approximate value of the electrical energy(E) in kilojoules? The value of Faraday's constant is 96,500 J/v.mol.e-. -0.75 V -0.40 V 2Cr + 3Cd 2Cr, + 3Cd) O 200 KJ O 201 KJ O 202 KJ O 203 KJ

26 Consider the standard electrode potentials of the following reactions. Cr3+(aq) + 3e--Cr(s) Cd2+(aq) + 2e-- Cd(s) What is the approximate value of the electrical energy(E) in kilojoules? The value of Faraday's constant is 96,500 J/v.mol.e-. -0.75 V -0.40 V 2Cr + 3Cd 2Cr, + 3Cd) O 200 KJ O 201 KJ O 202 KJ O 203 KJ

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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14.
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231. Subject :- Chemistry
Calculate the K and AG for the following reaction at 25 °C: Zn(s) + CuSO₂(aq) → ZnSO₂(aq) + Cu (s) Note: Reference the Standard reduction potentials at 25 °C and Fundamental constants tables for additional information. Part 1 of 2 Round your answer to 3 significant digits. Bo = Part 2 of 2 AGⓇ ☐x10 = Round your answer to 4 significant digits. X kJ mol 0x10 3 X Ś
Enter electrons as e". Use smallest possible integer coefficients. States are not required. If a box is not needed, leave it blank. Standard Reduction Potentials (Volts) at 25 °C Cl₂ (g) + 2 e →2 Cl(aq) O2(g) + 4 H3O+ (aq) + 4 e 6 H₂O(1) 1.360 1.229 2 H2O(l) + 2e Al3+ (aq) + 3 e → Al (s) H2(g) + 2 OH(aq) -0.828 -1.660 A 0.114 M neutral aqueous AlCl3 solution is electrolyzed under 1 atm pressure using platinum electrodes. (a) Write the half-reactions expected to occur, taking into account the effect of the non-standard conditions on the electrode potentials. Half-reaction at anode: + + + + Half-reaction at cathode: + + + + (b) What is the expected decomposition potential?
Standard Reduction Potentials (Volts) at 25 °C F2 (g) + 2 e- 2 F- (aq) 2.870 O2(g) + 4 H3O+(aq) + 4 e- 6 H2O(l) 1.229 2 H2O(l) + 2 e- H2(g) + 2 OH-(aq) -0.828 Fe2+ (aq) + 2 e- Fe (s) -0.440 A 0.122 M neutral aqueous FeF2 solution is electrolyzed under 1 atm pressure using platinum electrodes.(a) Write the half-reactions expected to occur, taking into account the effect of the non-standard conditions on the electrode potentials.Half-reaction at anode: + + -> + + Half-reaction at cathode: + + -> + + (b) What is the expected decomposition potential? _______ V
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Use standard reduction potentials to calculate the standard free energy change in kJ for the reaction: 2H+ (aq) + Hg(1)→ H₂(g) + Hg²+ (aq) 2H+ (aq) + 2e¯ → H₂(g) Fº red 2+ Hg2 (aq) + 2e¯ → Hg(1) AGO = || kJ K for this reaction would be Eº red = 0.000 V = = 0.855 V than one.
3.A technician is plating a faucet with 1.26 g of Cr from an electrolytic bath containing aqueous Cr2(SO4)3. If 18.5 min is allowed for the plating, what current is needed? Faraday's constant = 96, 485 C/mol . Molar mass Ni = 51.9961 g/mol Group of answer choices 2.10A 1.36A 3.16A 6.31A