Which transformation could take place at the cathode of an electrochemical cell? Select one: O A....
Which of the following is FALSE regarding the process of rusting? Select one a. electrochemical cell results in which iron serves as both an anode and a cathode b. aqueous solution of ions serves as a "salt bridge" c. oxygen gas is the cathode d. an electrochemical cell results in which iron serves as the anode e. pitting or erosion of iron results Clear my choice
PLEASE ANSWER ALL 4. The cell potential for the unbalanced chemical reaction: Hg2 2+(aq) + NO3 - (aq) + H+ (aq) → Hg2+(aq) + HNO2(aq) is measured under standard conditions and found to be + 0.02 V at 25C. a) What substance (not just the element) is oxidized in the cell? b) What substance (not just the element) is reduced in the cell? c) Write the half-reaction that occurs in the anode compartment. d) Write the half-reaction that occurs in...
Consider a voltaic (galvanic) cell with the following metal electrodes. Identify which metal is the cathode and which is the anode, and calculate the cell potential. (Use the table of Standard Electrode Potentials.) (a) Ca(II) and Sc(III) Cathode: . Ca(II) Sc(III) Anode: Ca(II) Sc(III) Ecell = 0.0591 x V (b) Pb(II) and In(III) Cathode: . Pb(II) In(III) Anode: Pb(II) In(III) Ecell - (c) Ni(II) and Zr(IV) Cathode: NI(II) Zr(IV) Anode: Ni(II) Zr(IV) Ecell - V Supporting Materials Periodic Table Supplemental...
An electrochemical cell consists of one half-cell that contains Ag(s) and Ag+(aq), and one half-cell that contains Cu(s) and Cu2+(aq). What species are produced at the electrodes under standard conditions? E° = +0.80 V Agt(aq) + e- → Ag(s) Cu2+(aq) + 2 e- → Cu(s) E° = +0.34 V O Ag(s) is formed at the cathode, and Cu(s) is formed at the anode. Ag(s) is formed at the cathode, and Cu2+ (aq) is formed at the anode. Cu(S) is formed...
1)Calculate the cell potential for the following reaction that takes place in an electrochemical cell at 25°C. Al(s) Al3+(aq, 0.115 M) Al3+(aq, 3.89 M) Al(s) Question options: a) +0.090 V b)+1.66 V c)+0.030 V d)+0.060 V e)0.00 V 2) Determine the identity of the daughter nuclide from the positron emission of F. Question options: a) N b) Na c) Ne d) O e) F
Which of the following statements is TRUE? Select one: a. Cell potential is the difference in electromagnetic potential between two half cells of an electrochemical cell b. Cell potential is also known as electrovoltaic force c. Cell potential is the difference in electric potential between two electrodes of an electrochemical cell d. A small battery will have a smaller cell potential than a large battery made out of the same materials e. Cell potential increases as a battery is discharged...
Calculate the cell potential (E cell) for the following reaction that takes place in an electrochemical cell at 25 ^C. 2 ClO2 (g) + Zn (s) ---> 2 ClO2 (aq) + Zn^2+ (aq) [Zn^2+]=0.46 M, P-ClO2=0.015 atm, [ClO2]=0.75 M ClO2 (g) + e- ----> ClO2^- (aq) E^o= 0.95 V
Calculate the cell potential for the following reaction that takes place in an electrochemical cell at 25°C. Sn(s) Sn2+(aq, 1.8 M) II Ag+(aq, 0.55 M)1 Ag(s) Sn2+ (aq) + 2 e Ag+ (aq) + e- Sn(s) Ag(s) E = -0.14 V E = 0.80 V -0.84 V +0.86 V 0 -0.93 V +1.12 V O 0.92 V
Which of the following complex ions is tetrahedral? Select one: a. [NiC14]2- o b. [PtC1412- OC. [AuCl4] O d. [PdC1412- Save response
Consider an electrochemical cell constructed from the following half cells, linked by a KCl salt bridge. a Fe electrode in 1.0 M FeCl2 solution a Sn electrode in 1.0 M Sn(NO3)2 solution Fe2+ + 2e- → Fe Eo = -0.44 V Sn2+ + 2e- → Sn Eo = -0.14 V When the cell is running spontaneously, which choice includes only true statements and no false ones? Select one: a. The iron electrode gains mass and the iron electrode is the...