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img102 - Name ID A 96 Calculate E for the following...

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Unformatted text preview: Name: ID: A 96 Calculate E for the following electrochemical cell at 25 °C «“5 {o3 9 q, 0.50 M) [ti-3m, 0.15 M) | Aw [email protected] I “k ( Pt(s) l Sn2 q, 0.50 M) n4+ v given the following standard reduction potentials. (fl @gKSHK—MfiQilaqfiE =-0.15 V ~0ttc, ,o 45 a -035 aq) +2’e‘ —) Sn2+(aq) E° =(+0.15 V)L~t\ ‘X .. o J‘ x a. -0.35V 5" E - 0-0___._.19"' \n G / Meow" b. -0.32 V f" i ’65:) -0.30V E‘- ‘O-‘B - 6.0161 \vx (OAFDQO-éoz -0.25 V 'z _, e. +0.05 V (05°) 0‘, 21. The following electrochemical cell has a potential of +0.617 V at 25 °C. u 7. fight ‘25’ ‘14 4,437.: Pt I H2<g,1-00 atm) I H+(aq, 1.00 M) H Ag*(aq) I Ag (”5* r f -’ A350) 0.1%“ ,_ o_o|t85- Zpfit « 19’ am.) V“ The standard reduction potential, E”, of Ag+ = +0.799 V. What is the Ag+ concentration? l "‘ “a. 8.3x10-8M "E“; . __\__ mu! L b. 7.1x10—6M « E '___._°-°LS" \nQ W X?» a 5‘" «a ‘C’ \ @ 8.4x10-4M - ¢ \ '4‘“‘°"“§€z d. 8.3x10-1M 6cm: 0.1M -_°_*_?E°_.1 in l\ 9'44““,(2 lawn)" -ic‘e. 1.2 x103M L ()0; w L _' X ‘ l 0 23 y = o . What is the pH of the solution at the cathode if Ecell = -0.174 V for the following electrochemical cell at 25 \ °C? 03““ { Pt I H2(g, 1.0 atrn) | H+(aq, 1.00 M) n H+(aq) I H2(g, 1.0 atm) 1 Pt 3 91 2’ 1)" t " U“ .a. 2.94 b. 5.88 4. + 76/ _>; \A c. 6.77 U" 1' d. 8.12 c. 13.54 . Which factor will decrease the potential of the following electrochemical cell? Pt I Sn4+(aq, 1.0 M), Sn2+(aq, 1.0 M) u Cu2+(aq, 0.200 M) I Cu switching from a platinum to a graphite anode decreasing the size of the cathode increasing the concentration of Cu2+ decreasing the concentration of Sn4+ increasing the temperature of the cell 5%??? ...
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