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4. Use the chemical equation for the redox reaction and the Nernst equation to explain the...
Use the table of Standdard Reduction Potentials and the Nernst Equation to calculate the concentration of...
Use the table of Standdard Reduction Potentials and the Nernst
Equation to calculate the concentration of Cu2+ present in the
Cu/Cu2+ half-cell after the addition NH3 (aq) while it was coupled
with
a) Zn/Zn2+
b) Ag/Ag+
Table 2 has your measured voltages for these cells. SHOW YOUR
SETUP OF THE NERST EQUATION WITH ALL VARIABLES FILLED IN. SHOW THE
CALCULATED [Cu2+] CONCENTRATION.
Table 2:
METAL
Mg
Ag
Ni
Zn
Pb
Cu
1.230 V
0.642 V
0.030 V
0.648 V
0.256...
QUESTIONS AND PROBLEMS Voltaic Cells 1. Write a balanced chemical equation for the overall cell reaction...
QUESTIONS AND PROBLEMS Voltaic Cells 1. Write a balanced chemical equation for the overall cell reaction represented as a. (Pt) H2/H (Pt) Fe +/Fe2+ b. Cd/Cd2+ | Ni?+/Ni c. (PL) CI-/C1, | (Pt) MnO,-/Mn an aqueous gram of the Write the overall equa 6. Follow tl cell in which aqucous solt rrverale The
Consider the unbalanced redox reaction: MnO−4(aq)+Zn(s)→Mn2+(aq)+Zn2+(aq) Balance the equation in acidic solution. Part B- Determine the...
Consider the unbalanced redox reaction: MnO−4(aq)+Zn(s)→Mn2+(aq)+Zn2+(aq) Balance the equation in acidic solution. Part B- Determine the volume of a 0.475 M KMnO4 solution required to completely react with 3.35 g of Zn.
Consider the unbalanced redox reaction occurring in acidic solution: MnO−4(aq)+Zn(s)→Mn2+(aq)+Zn2+(aq) Part A Balance the equation in...
Consider the unbalanced redox reaction occurring in acidic solution: MnO−4(aq)+Zn(s)→Mn2+(aq)+Zn2+(aq) Part A Balance the equation in acidic solution. Express your answer as a chemical equation. Identify all of the phases in your answer. Part B Determine the volume of a 0.200 M KMnO4 solution required to completely react with 2.40 g of Zn. Express your answer using three significant figures.
Chem 1212 Lab Report on electrochemistry Electrochemistry When electrons transfer between reaction components in a redox...
Chem 1212 Lab Report on electrochemistry
Electrochemistry When electrons transfer between reaction components in a redox reaction, we can harness the motion of the electrons to create a potential. Electrochemistry revolves around the separation of the two half-reactions in a redox reaction and establishing two different electrodes. This might involve physically separating the half-reactions or including a separator, such as a semi-permeable membrane or plastic dividers. With the reactions separated, the electrons will need to flow through the wire connecting...
5. The nickel-cadmium battery, despite issues with the toxicity of Cd, is still used in some...
5. The nickel-cadmium battery, despite issues with the toxicity of Cd, is still used in some rechargeable batteries because it has very consistent voltage over long discharge times. a) Using only half-cell reactions given in Table 16.1, write the overall reaction and give the highest AV° value possible for a NiCd battery. b) The actual half-cell reactions used in a Nicd battery are: Ca(OH)2(8) + 2e → Cds + 2OH(aq) (Vº = -0.86V) NiO(OH)) + H2O) +e Ni(OH)2(s) + OH(aq)...
Question9 Write the Nernst equation of the following cells at 298 K: (i) Mg(s) | Mg210.001...
Question9 Write the Nernst equation of the following cells at 298 K: (i) Mg(s) | Mg210.001 M) Il Cu2+(0.0001 M) I Cu(s) (ii) F e(s) l Fe,"(0.001 M) İl H+(1 M)1Hz(g)( l bar) I Pt(s) (İİİ) Sn(s) | Sn2+(0.050 M) Il H+(0.020 M) I H2(g) (1 bar) | Pt(s) (iv) Pt(s) | Br(ol Br-(0.010 M) Il H'(0.030 M) I H2(g) ( l bar) I Pt(s). Question 10 In the button cells widely used in watches and other devices the following...
Cell Potential and Equilibrium Standard reduction potentials The equilibrium constant, K, for a redox reaction is...
Cell Potential and Equilibrium Standard reduction potentials The equilibrium constant, K, for a redox reaction is related to the standard cell potential, Ecel, by the equation Reduction half-reaction (V) Ag+ (aq) + e-→Ag(s) Cu2+ (aq) + 2e-→Cu(s) 0.34 Sn (a) 4e-Sn(s 0.15 2H' (aq) + 2e-→H2 (g) Ni2+ (aq) + 2e-→Ni(s)-0.26 Fe2+ (aq) + 2e-→Fe(s)-0.45 Zn2+ (aq) + 2e-→Zn(s)-0.76 Al3+ (aq) +3e-→Al(s) -1.66 Mg2+ (aq) + 2e-→Mg(s) -2.37 0.80 n FEcell where n is the number of moles of electrons...
Need help with questions 1-5 D Determine whether each redox reaction occurs spontane- ously in the...
Need help with questions 1-5
D Determine whether each redox reaction occurs spontane- ously in the forward direction. (a) Ca2+(aq) + Zn(s)-Ca(s) + Zr"(al) (b) 2 Ag+(aq) + Ni(s)--2 Ag(s) + N产(aq) (c) Fe(s) +Mn2 (aą)- Fe (aą)Mn(s) (d) 2 Al(s) + 3 Pb2+(aq) → 2 AP"(aq) + 3 Pb(s) Suppose you wanted to cause Pb ions to come out of solu- tion as solid Pb. What metal could you use to accomplish this? Make a sketch of an electrochemical...
Write the half reactions and overall reaction for each cell with calculated overall potentials as shown...
Write the half reactions and overall reaction for each cell with calculated overall potentials as shown in Table 5-1. (Note: for the iron solutions the Nernst equation must be used) Pb(s) | Pb(NO3)2 (0.1M) || Cu(NO3)2 (0.1M) Cu(s) Zn(s) | Zn(NO3)2(0.1M) || Cu(NO3)2 (0.1M) Cu(s) Cds) | Ca(NO3)2 (0.1M) || Cu(NO3)2 (0.1M) | Cu(s) Cu() Cu(NO3)2(0.1M) Il Fe (0.1M/Fe? (0.1M graphite Pb(s) Pb(NO3)2(0.1M) Il Fe3(aq) (0.1M)/ Fe2(aq) (0.1MI graphite(s) Zns | Zn(NO3)2 (0.1M) || Pb(NO3)2 (0.1M) | Pb(s) Cdis Ca(NO3)2...
Use the table of Standdard Reduction Potentials and the Nernst
Equation to calculate the concentration of Cu2+ present in the
Cu/Cu2+ half-cell after the addition NH3 (aq) while it was coupled
with
a) Zn/Zn2+
b) Ag/Ag+
Table 2 has your measured voltages for these cells. SHOW YOUR
SETUP OF THE NERST EQUATION WITH ALL VARIABLES FILLED IN. SHOW THE
CALCULATED [Cu2+] CONCENTRATION.
Table 2:
METAL
Mg
Ag
Ni
Zn
Pb
Cu
1.230 V
0.642 V
0.030 V
0.648 V
0.256...
QUESTIONS AND PROBLEMS Voltaic Cells 1. Write a balanced chemical equation for the overall cell reaction represented as a. (Pt) H2/H (Pt) Fe +/Fe2+ b. Cd/Cd2+ | Ni?+/Ni c. (PL) CI-/C1, | (Pt) MnO,-/Mn an aqueous gram of the Write the overall equa 6. Follow tl cell in which aqucous solt rrverale The
Chem 1212 Lab Report on electrochemistry
Electrochemistry When electrons transfer between reaction components in a redox reaction, we can harness the motion of the electrons to create a potential. Electrochemistry revolves around the separation of the two half-reactions in a redox reaction and establishing two different electrodes. This might involve physically separating the half-reactions or including a separator, such as a semi-permeable membrane or plastic dividers. With the reactions separated, the electrons will need to flow through the wire connecting...
5. The nickel-cadmium battery, despite issues with the toxicity of Cd, is still used in some rechargeable batteries because it has very consistent voltage over long discharge times. a) Using only half-cell reactions given in Table 16.1, write the overall reaction and give the highest AV° value possible for a NiCd battery. b) The actual half-cell reactions used in a Nicd battery are: Ca(OH)2(8) + 2e → Cds + 2OH(aq) (Vº = -0.86V) NiO(OH)) + H2O) +e Ni(OH)2(s) + OH(aq)...
Question9 Write the Nernst equation of the following cells at 298 K: (i) Mg(s) | Mg210.001 M) Il Cu2+(0.0001 M) I Cu(s) (ii) F e(s) l Fe,"(0.001 M) İl H+(1 M)1Hz(g)( l bar) I Pt(s) (İİİ) Sn(s) | Sn2+(0.050 M) Il H+(0.020 M) I H2(g) (1 bar) | Pt(s) (iv) Pt(s) | Br(ol Br-(0.010 M) Il H'(0.030 M) I H2(g) ( l bar) I Pt(s). Question 10 In the button cells widely used in watches and other devices the following...
Cell Potential and Equilibrium Standard reduction potentials The equilibrium constant, K, for a redox reaction is related to the standard cell potential, Ecel, by the equation Reduction half-reaction (V) Ag+ (aq) + e-→Ag(s) Cu2+ (aq) + 2e-→Cu(s) 0.34 Sn (a) 4e-Sn(s 0.15 2H' (aq) + 2e-→H2 (g) Ni2+ (aq) + 2e-→Ni(s)-0.26 Fe2+ (aq) + 2e-→Fe(s)-0.45 Zn2+ (aq) + 2e-→Zn(s)-0.76 Al3+ (aq) +3e-→Al(s) -1.66 Mg2+ (aq) + 2e-→Mg(s) -2.37 0.80 n FEcell where n is the number of moles of electrons...
Need help with questions 1-5
D Determine whether each redox reaction occurs spontane- ously in the forward direction. (a) Ca2+(aq) + Zn(s)-Ca(s) + Zr"(al) (b) 2 Ag+(aq) + Ni(s)--2 Ag(s) + N产(aq) (c) Fe(s) +Mn2 (aą)- Fe (aą)Mn(s) (d) 2 Al(s) + 3 Pb2+(aq) → 2 AP"(aq) + 3 Pb(s) Suppose you wanted to cause Pb ions to come out of solu- tion as solid Pb. What metal could you use to accomplish this? Make a sketch of an electrochemical...
Write the half reactions and overall reaction for each cell with calculated overall potentials as shown in Table 5-1. (Note: for the iron solutions the Nernst equation must be used) Pb(s) | Pb(NO3)2 (0.1M) || Cu(NO3)2 (0.1M) Cu(s) Zn(s) | Zn(NO3)2(0.1M) || Cu(NO3)2 (0.1M) Cu(s) Cds) | Ca(NO3)2 (0.1M) || Cu(NO3)2 (0.1M) | Cu(s) Cu() Cu(NO3)2(0.1M) Il Fe (0.1M/Fe? (0.1M graphite Pb(s) Pb(NO3)2(0.1M) Il Fe3(aq) (0.1M)/ Fe2(aq) (0.1MI graphite(s) Zns | Zn(NO3)2 (0.1M) || Pb(NO3)2 (0.1M) | Pb(s) Cdis Ca(NO3)2...
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