Which one of the following reactions is spontaneous (in the direction given) under standard elecrochemical conditions?
A. Pb2+ + 2I- --> Pb + I2
B. Cu2+ + Fe ---> Cu + Fe2+
C. 2Au + Pt2+ --> 2Au+ + Pt
D. Mg2+ + 2Br- --> Mg + Br2
E. 2Hg + 2Cl- +2H+ --> Hg2Cl2 + H2
Which one of the following reactions is spontaneous (in the direction given) under standard elecrochemical conditions?...
For all of the following experiments, under standard conditions, which species could be spontaneously produced? A lead wire is placed in a solution containing Cu2+ yes no Cu yes no PbO2 yes no No reaction Crystals of I2 are added to a solution of NaCl. yes no I- yes no No reaction yes no Cl2 A silver wire is placed in a solution containing Cu2+ no yes Cu no yes No reaction no yes Ag+ Half-Reaction 8° (V) Half-Reaction 8° (V) 2.87 1.99 1.82 1.78 1.70 1.69 1.68 1.60...
1. Which of the following reactions would be spontaneous at standard state conditions and 25C? EXPLAIN your answer. a. Cu2+ + 2Br- ---> Br2(aq) + Cu b. Br2(aq) + 2Cl- ---> Cl2(aq) + 2Br- c. Fe + Cu2+ ---> Fe2+ + Cu 2. What would happen to the cell potential for the reaction below if the concentration of Cr3+ were reduced to .010M? Explain your answer and show your work. 2Cr + 3Cu2+ ---> 2Cr3+ + 3Cu a. It would...
19. Which of the following describes the net reaction that occurs in the cell, a. Cu Cd2+ - Cu2- +Cd c. Cu2+ Cd2+Cu + Cd d. Cu2+ Cd b. Cu + Cd ? Cu2+ + Cd2+ Cu Cd2+ e. 2Cu 20. direction given) under standard electrochemical conditions? Which one of the following reactions is spontaneous (in the b. Cu Fe Cu Fe2 c. 2Au e. 2Hg +
1) Which of the following oxidation-reduction reactions will be spontaneous in the direction written? Select all that apply. Mg2+ (aq) + Be (s) → Mg (s) + Be2+ (aq) Cu2+ (aq) + Zn (s) → Cu (s) + Zn2+ (aq) Hg2+ (aq) + Cu (s) → Hg (l) + Cu2+ (aq) Pb2+ (aq) + Cu (s) → Pb (s) + Cu2+ (aq) Fe2+ (aq) + Pb (s) → Fe (s) + Pb2+ (aq) 2) What is the value (in V)...
Please answer the following questions! 20. Which one of the following reactions is spontaneous (in the direction given) under standard electrochemical conditions? +2Br- Mg+ Br2 What is the cell potential for a cell constructed by immersing a strip of manganese in a 1. M MnSO4 solution and a strip of iron in a 1.0 M FesO4 solution and completing the circuit by a wire and a salt bridge? 21. b. +1.62 V c. -0.74 V d. +0.74 V e. +1.21...
11.) Calculate the standard emf of a cell that uses the Mg/Mg2+ and Cu/Cu2+ half-cell reactions at 25 C. Write the equation for the cell reaction that occurs under standard-state conditions. 12.) Calculate the emf and then predict whether the following reaction would occur spontaneously in aqueous solutions at 25 C. Assume that the initial concentrations of dissolved species are all 1.0 M. Show calculations. a.) Care) + Cd2+ (aq) → Ca2+ + Cd() b.) Br2() + Sn(3) ► 2Br...
Balance following redox reactions in acidic conditions using the half-reaction method a. Fe + Ag+ → Fe2+ + Ag b. I- + SO42- → H2S + I2 c. Cu + NO3- → Cu2+ + NO2 d. PbO₂ + CI- → Pb2+ + Cl₂
Which of the following reactions is spontaneous in the reverse direction as written? I) Ni+2(aq) + Pb(s) → Ni(s) + Pb+2(aq) Ecell° = -0.124 V II) Pb+2(aq) + H2(g) → Pb(s) + 2H+(aq) Ecell° = -0.126 V III) Cu+2(aq) + Fe(s) → Cu(s) + Fe+2(aq) Ecell° = +0.78 V IV) Zn+2(aq) + 2Ag(s) → Zn+2(aq) + 2Ag+(aq) Ecell° = -1.562 V a. I, II & IV b. IV c. III d. II e. I f. II & IV g. I...
Calculate the cell potential, E, for the given reactions at 25.00 °C using the ion concentrations provided. Then, determine if the cells are spontaneous or nonspontaneous as written. Refer to the table of standard reduction potentials (E Pt(s)Fe2+(aq) Pt2+(aq) + Fe(s) [Fe2+ [Pt2+] = 0.0023 M = 0.011 M The cell is V E = O not spontaneous. O spontaneous Cu(s)2 Ag (aq) Cu2+(aq) + 2 Ag(s) [Cu2+0.031 M [Ag*] = 0.031 M The cell is V E = O...
Using standard reduction potential in aqueous solutions at 25c Table, which substance is most likely to be oxidised by O2 (g) in acidic aqueous solution? Select one: a. Br2 (l) b. Br- (aq) c. Ni2+ (aq) d. Ag (s) e. Cu2+ (aq) Cathode (Reduction) Half-Reaction Standard Potential E° (volts) Li+(aq) + e- -> Li(s) -3.04 K+(aq) + e- -> K(s) -2.92 Ca2+(aq) + 2e- -> Ca(s) -2.76 Na+(aq) + e- -> Na(s) -2.71 Mg2+(aq) + 2e- -> Mg(s) -2.38 Al3+(aq)...