A platinum electrode is immersed into a solution of 10 mol m-3 KNO3 and poised at -1 V.(1) Sketch how the concentration of potassium ions, [K+], change as a function ofdistance,x, from the electrode surface.(Calculate the extent to which the electrical double layer protrudes from the electrodesurface, assuming a water solvent (\epsi r = 78.1) at 25 deg CI

Part (i): Concentration Profile of K⁺ IonsHere's a sketch of how the concentration of K⁺ ions…

Answered: A platinum electrode is immersed into a…

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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Please fill in the columns in table 2, given the answers in table 1. Please point out any errors in table 1 Givens: Potential for any half reaction involving silver is 0.00 V
(c) 0.04 molar solution of NaCl is filled in a conductance cell at 25°C that showed a resistance of 175 ohms. The specific conductance of the NaCl solution used is 2.77 x 102 mho cm. The same cell containing 0.02 molar KCl solution gave an electrical resistance of 424 ohms. What will be the specific and equivalent conductance of the KCI solution?
For the cell Ag | AgCl | Cl (a = 0.0001), Ce4+ (a (a = 0.01), Ce³+ 0.1) | Pt, solve for in V, where the standard half-cell potentials are 0.2225 V for AgCl|CI and 1.45 V for Ce4+|Ce³+ F = 96,485 C mol-¹
A current of 7.14×104 A is passed through an electrolysis cell containing molten KCl for 13.9 days.(a) How many grams of potassium are produced? g(b) How many liters of chlorine are collected, if the gas is at a temperature of 273 K and a pressure of 1.00 atm? L
How many minutes will it take to electrodeposit 3.0 g of Cu (63.55 g/mol) on the surface of a keychain from a Cu(NO3)2 solution if 2.0 A of current is applied to it?
(a) Determine the mass of Na,S2O3.5H20 required to prepare 0.1N solution in 50 ml volume. (b) Compare combustion of Anthracene and Xylene in sufficient supply of air. Which one will produce more carbon rich sooty flame and why? (c) Consider electrode potential data given in Question 4 (c). Predict which two electrodes combination will give maximum potential. Provide justification. (d) Explain two industrial applications of acidic buffer solutions. (e) Discuss the importance of Hess law with suitable example.
When the oxidation-reduction reaction was balanced in acidic solution. If the [H2O2] = 0.352 M, partial pressure of Oz is 2.21 atm, [K2Cr2O7) = 0.642 M, the [Cr3+] = 0.963 M, and the pH was measured to be 8.42 then what is the cell potential at 25°C? O2(g) + Cr3+ *(aq) → H202(aq) + Cr20-2" (aq)
Calculate the electrode potential of the semi-cell containing potassium dichromate, K2Cr2O7 0.1 mol / L and chromium nitrate, Cr (NO3) 3 0.05 mol / L in a solution of pH = 2.00.
11. Given, Cd(s) + 2H*(aq) Cd2*(aq) + H2(g) State the effect on the cell potential, Ecell when the following changes are made: (a) The pressure of hydrogen gas is increased in the cathode compartment. (b) Sodium hydroxide is added into the electrolyte at the cathode. (c) Concentration of Cd2+ is decreased. (d) Diameters of electrodes are increased.
Pt(k)| Fe³+(aq), Fe²+(aq) // I-(aq) | 12(k) | Calculate the standard cell potential for the Pt(k) Cell and interpret whether the reaction taking place in the cell will proceed spontaneously under standard conditions. E° (Pt|Fe³+, Fe²+) = 0.77 V . E°( 12 | I-) = 0.53 V
7) How long would it take to electrodeposit all the Cu2+ in 0.250 L of 0.210 M CuSO4 solution with an applied potential difference of 0.295 V and a current of 3.00 amperes? Enter your answer in minutes.
Complete the following, providing written work for each part in order to receive credit: (a) Use shorthand notation to describe an electrochemical cell that contains gold (Au) and chromium (Cr) electrodes.(b) Determine which electrode will function as the anode and which will function as the cathode when the cell runs under standard conditions.(c) Calculate ΔG° for the cell under standard conditions. Enter your value for ΔG° in kJ below; do not actually enter the units.

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