Delta G(rxn) = - n * F * E
F is Faraday constant
n is number of electrons transferred.
E is cell potential.
-718*1000 = - 6 * 96500 * E
E = 1.24 volts
Answer
What is E for the reaction 2Al(s) + 3Fe2+(aq, 2.0 M) ---> 2A13+(aq, 0.030 M) +...
Question 2 (1 point) Given: Cr3+ (aq) + 3e --> Cr(s); E = -0.74 V Fe2+(aq) + 2e- --> Fe(s): E° = -0.41 V What is the standard cell potential for the following reaction? 2Cr(s) + 3Fe2+(aq) --> 3Fe(s) + 2 Cr3+(aq)? +0.33 v -0.33 v +1.15 V O-1.15 V +0.25 V
What is ∆Grxn at 25ºC for the following reaction: 4Au3+(aq,
0.050 M) + 12OH–(aq, 0.0020 M) --> 4Au(s) + 3O2(g, 0.15 atm) +
6H2O(l)? Given the following standard reduction potentials:
Au3+(aq) + 3e– --> Au(s); Eº = 1.40 V O2(g) + 2H2O(l) + 4e–
--> 4OH–(aq); Eº = 0.401 V
Question 5 0 / 1 point What is DGrxn at 25°C for the following reaction: 4Au3+(aq, 0.050 M) + 120H"(aq, 0.0020 M) --> 4Au(s) + 302(8, 0.15 atm) + 6H2O(l)?...
The following redox reaction is conducted with TAP = 0.01 M and Mn 2Al(s) + 3Mnaq) + 2Al(aq) + 3Mn(s) E=0.48 V 3.0 M. What is the cell potential E? Chem g mol-1
Half-Reaction Fe2+(aq) + 2e Fe(s) Hg2+ (aq) + 2e Hg() Ag+ (aq) + e + Ag(s) Cu2+ (aq) + 2e + Cu(s) Zn2+ (aq) + 2e → Zn(s) E (V) -0.44 0.86 0.80 0.34 - 0.76 Using the table, calculate Eºcell for the following electrochemical cell under standard conditions voltmeter a) 1.24 V Fe. salt bridge Ag b) -1.24 V c) 2.04 V d) - 2.04 V Ag a b С
Pt(s) + Fe2+ (aq) - P+2+ (aq) + Fe(s) [Fe2+] = 0.0083 M [P+2+] = 0.030 M The cell is not spontaneous. O spontaneous. Cu(s) + 2 Ag+ (aq) Cu2+ (aq) + 2 Ag(s) (Cu²+] = 0.013 M [Ag+] = 0.013 M The cell is O not spontaneous O spontaneous. Co2+ (aq) + T18+ (aq) [Co2+] = 0.060 M (T3+1 = 0.0060 M Co + (aq) + Ti”+ (aq) Co+] = 0.050 M [Ti?+] = 0.0115 M E-L v The...
Question 5 (1 point) Given: Cr3+(aq) + 3e --> Cr(s); E° = -0.74 V Sn2+(aq) + 2e- --> Sn(s); E° = -0.14 V What is the standard cell potential for the following reaction? 2Cr(s) + 3Sn2+(aq) --> 3Sn(s) + 2Cr3+(aq)? 0-0.60 v 0 +0.60 v O +1.06 V 0 +0.88 V 0-0.88 V
Question 2 (1 point) What is Eºcell for the cell reaction: 2Cr(s) + 3Sn4+(aq) --> 3Sn2+(aq) + 2Cr3+ (aq)? Given: Cr3+(aq) + 3e --> Cr(s); E° = -0.74 V Sn4+(aq) + 2e --> Sn2+(aq); E° = +0.15 V 0 +0.45 V O +0.89 V O 1.93 V 0-0.59 V 0 +0.59 V
14. (20 pts total) Consider the following cell reaction at 25 o°C: 2 Al(s)3 Ni (aq)>2 A (aq) +3 Ni(s) Calculate the following: a. (10 pts) Under standard conditions, calculate the Gibbs Free Energy, AG , in J. (Standard reduction potentials are in the last page of the exam) b. (10 pts) At non-standard conditions, if the concentrations of Ni respectively, calculate the E, in V. Assume T 25 °C. and Al are 0.015 M and 0.010 M,
A voltaic cell employs the following redox reaction: 2 Fe3+ (aq) + 3 Mg(s) + 2 Fe (s) + 3 Mg²+ (aq) Calculate the cell potential at 25 °C under each of the following conditions. Part B [Fe3+] =1.3x103 Μ; [Mg2+] = 1.85 M ΡΟΙ ΑΣΦ 5 - 0 ΕΞΙ ? Ecell = - Part [Fe3+] = 1.85 M ; (Mg2+] = 1.3x10-3 M 1190 AM O O ? Ecell =
please answer the questions based on the reaction and the
result provided for the experiment.
reaction is:
Mg (s) + 2HCl (aq) —-> MgCl2 (aq) +H2 (g)
the first picture is the data collected for the
experiment.
Data: Trial O. o 344 36.00 mL 20.00 cm Trial #1 o.σ 39万 4o.81 m1 4.20 m Mass magnesiu n lume Height of wates Column (Cim) (Distance baborr wte eel wader temperature C) 22.6 22.2°c Baranetric pmesureH Post-Lab Questions (Please type your answers.)...