Clear my choiceQuestion 7Not yet answeredMarked out of 1Remove flagThe AHvapis related to the strength of intermolecular forces. Which of the following has the lowest AHvapO CH12O CH,OHC,H,NH,Question 8Not yet answeredMarked out of 1Flag questionWhich is the reducing agent and substance reduced in the following equation:SICL, (1)+2Mg (s)- 2M9C12 (s) + SI (s)

Answered: Image /qna-images/answer/6d1d8664-e89a-4bf7-aee3-0fc8f7251f2a.jpg

Question 7 Not yet answered Marked out of 1 - Remove flag The AH vap is related to the strength of intermolecular forces. Which of the following has the lowest AH vap O CH12 O CH3 O CH,OH C,H,NH, Question 8 Not yet answered Marked out of 1 r Flag question Which is the reducing agent and substance reduced in the following equation: Sici, ()+ 2Mg ()- 2M9C12 (s)+S (s)

Question 7 Not yet answered Marked out of 1 - Remove flag The AH vap is related to the strength of intermolecular forces. Which of the following has the lowest AH vap O CH12 O CH3 O CH,OH C,H,NH, Question 8 Not yet answered Marked out of 1 r Flag question Which is the reducing agent and substance reduced in the following equation: Sici, ()+ 2Mg ()- 2M9C12 (s)+S (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

Chapter18: Electrochemistry

Section: Chapter Questions

Problem 62E

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Consider the following reaction at 25°C: O2(g)+4H+(aq)+4Cl(aq)2H2O+2Cl2(g) The [H+] is adjusted by adding a buffer that is 0.125 M in lactic acid (HLac) and 0.125 M in sodium lactate (NaLac). The pressure of both gases is 1.00 atm and [Cl-] is 0.200 M. (Kafor HLac is 1.4104 .) Will the cell function as a voltaic cell?
A solution contains the ions H+, Ag+, Pb2+, and Ba2+, each at a concentration of 1.0 M. (a) Which of these ions would be reduced first at the cathode during an electrolysis? (b) After the first ion has been completely removed by electrolysis, which is the second ion to be reduced? (c) Which, if any, of these ions cannot be reduced by the electrolysis of the aqueous solution?
Consider a concentration cell that has both electrodes made of some metal M. Solution A in one compartment of the cell contains 1.0 M M2+. Solution B in the other cell compartment has a volume of 1.00 L. At the beginning of the experiment 0.0100 mole of M(NO3)2 and 0.0100 mole of Na2SO4 are dissolved in solution B (ignore volume changes), where the reaction M2+(aq)+SO42(aq)MSO4(s) occurs. For this reaction equilibrium is rapidly established, whereupon the cell potential is found to be 0.44 V at 25C. Assume that the process M2++2eM has a standard reduction potential of 0.31 V and that no other redox process occurs in the cell. Calculate the value of Ksp for MSO4(s) at 25C.
An electrode is prepared by dipping a silver strip into a solution saturated with silver thiocyanate, AgSCN, and containing 0.10 M SCN . The cell potential of the voltaic cell constructed by connecting this electrode as the cathode to the standard hydrogen half-cell as the anode is 0.45 V. What is the solubility product of silver thiocyanate?
Calculate the standard cell potential of the cell corresponding to the oxidation of oxalic acid, H2C2O4, by permanganate ion. MnO4. 5H2C2O4(aq)+2MnO4(aq)+6H+(aq)10CO2(g)+2Mn2+(aq)+8H2O(l) See Appendix C for free energies of formation: Gf for H2C2O4(aq) is 698 kJ.
The measurement of pH using a glass electrode obeys the Nernst equation. The typical response of a pH meter at 25 00C is given by the equation where contains the potential of the reference electrode and all other potentials that arise in the cell that are not related to the hydrogen ion concentration. Assume that = 0.250 V and that a. What is the uncertainty in the values of pH and [H+] if the uncertainty in the measured potential is 1 m V ( 0.001 V)? b. To what precision must the potential be measured for the uncertainty in pH to be 0.02 pH unit?
An aqueous solution of an unknown salt of vanadium is electrolyzed by a current of 2.50 amps for 1.90 hours. The electroplating is carried out with an efficiency of 95.0%, resulting in a deposit of 2.850 g of vanadium. a How many faradays are required to deposit the vanadium? b What is the charge on the vanadium ions (based on your calculations)?

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