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The half-cell reactions that occur in a typical flashlight battery are: Zn(s) -7 Zn²+ (aq) +...
#3-4 Post-Laboratory Questions (Use the spaces provided for the answers and additional paper if necessary) 1....
#3-4
Post-Laboratory Questions (Use the spaces provided for the answers and additional paper if necessary) 1. A strip of tin (Sn) is placed in an AgNO, solution. ction reaction should ocur (1) Predict whether or not a spontaneous Explain your reasoning oxidation-reduction reaction should occur in this system (2) Write a chemical equation to describe the net reaction, if it is spontaneous. (3) Indicate the experimental observations you would expect for this procedure. 2. The half-cell reactions that occur in...
7. A is cell made by placing Zn(s) in Zn2 (aq) and Au(s) in Au (aq)....
7. A is cell made by placing Zn(s) in Zn2 (aq) and Au(s) in Au (aq). Use Standard Reduction Potentials. (12 points) a. Write the half reaction for the reaction at the cathode: Calculate the voltage for the standard cell (IM Zn2* (aq) and 1 M Au?* (aq). c. Calculate the voltage for the cell after it is 999% used up. Assume 1.00 L of each solution. (Hint: Write the overall equation.)
6. Al(s) + A1+ (aq) + 3 e Zn + (aq) +2e → Zn() The half-reactions...
6. Al(s) + A1+ (aq) + 3 e Zn + (aq) +2e → Zn() The half-reactions for the oxidation-reduction reaction between Al(s) and Zn2+ (aq) are represented above. Based on the half-reactions, what is the coefficient for Al(s) if the equation for the oxidation-reduction reaction is balanced with the smallest whole-number coefficients? We were unable to transcribe this image
A galvanic cell consists of a Cu(s)|Cu2+(aq) half cell and a Zn(s)|Zn2+(aq) half-cell connected by a...
A galvanic cell consists of a Cu(s)|Cu2+(aq) half cell and a Zn(s)|Zn2+(aq) half-cell connected by a salt bridge. Oxidation occurs in the zinc half-cell. The cell can be represented in standard notation as Cu(s)|Cu2+(aq)|Zn(s)|Zn2+(aq) Zn(s)|Zn2+(aq)||Cu(s)|Cu2+(aq) Cu2+(aq)|Cu(s)||Zn(s)|Zn2+(aq) Zn(s)|Zn2+(aq)||Cu2+(aq)|Cu(s) Zn2+(aq)|Zn(s)||Cu(s)|Cu2+(aq) A,B,C,D?
Consider a voltaic cell where the anode half-reaction is Zn(s) → Zn2+(aq) + 2 e− and...
Consider a voltaic cell where the anode half-reaction is Zn(s) → Zn2+(aq) + 2 e− and the cathode half-reaction is Sn2+(aq) + 2 e– → Sn(s). What is the concentration of Sn2+ if Zn2+ is 2.5 × 10−3 M and the cell emf is 0.660 V? The standard reduction potentials are given below Zn+2(aq) + 2 e− → Zn(s) E∘red == −0.76 V Sn2+(aq) + 2 e– → Sn(s) E∘red −0.136 V
2. For Pb (s) and H2SO4 (aq) a. Write the chemical equations for the reactions that...
2. For Pb (s) and H2SO4 (aq) a. Write the chemical equations for the reactions that occur at the anode and cathode when the battery discharges and behaves as a voltaic cell. Be sure to include the standard potential value, E°, with each equation. b. Combine the two half-reactions to yield the overall equation for the reaction. Determine the E°total (or E°cell) for the lead battery.
The spontaneous galvanic cell of a lead storage battery (a typical car battery) is composed of the following reduction half reactions reduced 1.69 v Pb02 (s)+ HSO, (aq)+3 Ha0 (aq) + 2 e Pbs04 (s)...
The spontaneous galvanic cell of a lead storage battery (a typical car battery) is composed of the following reduction half reactions reduced 1.69 v Pb02 (s)+ HSO, (aq)+3 Ha0 (aq) + 2 e Pbs04 (s)+5 H20) PbSO4 (s) + H3O (aq) 2 e Pb (s)+HSO (aq)+ H20 (I) E reduced 0.36 V How much current (in A) does a cell phone charger for your car use if your car dies after 14 hours of leaving the phone plugged in without...
Consider the voltaic cell and reduction half potentials: Zn(s) | Zn 2+(aq) (0.100 M) || Ni2+(aq)...
Consider the voltaic cell and reduction half potentials: Zn(s) | Zn 2+(aq) (0.100 M) || Ni2+(aq) (1.50 M) | Ni(s) Zn 2+ (aq)/Zn (s) E o = - 0.760 V Ni2+ (aq)/Ni (s) E o = - 0.230 V a) Sketch the voltaic cell represented with the above line notation. Label the anode and cathode and indicate the half-reactions occurring at each electrode and the species present in each solution. Also indicate the direction of electron flow (3 marks). b)...
Question 17 1 pts Given these half cell reactions: Zn+2 (aq) + 2e → Zn (s)...
Question 17 1 pts Given these half cell reactions: Zn+2 (aq) + 2e → Zn (s) E = -0.76 V Ag+ (aq) + e Ag (s) E° = 0.80V Write the Cell Diagram (line notation) representing the anode and cathode half reactions. Note: Use forward slash as line separators, HTML Editor BIVA -A- IE * 3 1 1 x'x, EE D D N V VD 1 2pt - Paragraph - ®
A chemist designs a galvanic cell that uses these two half-reactions: half-reaction standard reduction potential Zn(s)...
A chemist designs a galvanic cell that uses these two half-reactions: half-reaction standard reduction potential Zn(s) red -0.763 V Zn2+ (aq)+2e NO3(aq)+4 H+ (aq)+3e NO(9)+2H20(1) EO red = +0.96 V Answer the following questions about this cell. Write a balanced equation for the half-reaction that happens at the cathode. е х Write a balanced equation for the half-reaction that happens at the anode. Write a balanced equation for the overall reaction that powers the cell. Be sure the reaction is...
#3-4
Post-Laboratory Questions (Use the spaces provided for the answers and additional paper if necessary) 1. A strip of tin (Sn) is placed in an AgNO, solution. ction reaction should ocur (1) Predict whether or not a spontaneous Explain your reasoning oxidation-reduction reaction should occur in this system (2) Write a chemical equation to describe the net reaction, if it is spontaneous. (3) Indicate the experimental observations you would expect for this procedure. 2. The half-cell reactions that occur in...
7. A is cell made by placing Zn(s) in Zn2 (aq) and Au(s) in Au (aq). Use Standard Reduction Potentials. (12 points) a. Write the half reaction for the reaction at the cathode: Calculate the voltage for the standard cell (IM Zn2* (aq) and 1 M Au?* (aq). c. Calculate the voltage for the cell after it is 999% used up. Assume 1.00 L of each solution. (Hint: Write the overall equation.)
6. Al(s) + A1+ (aq) + 3 e Zn + (aq) +2e → Zn() The half-reactions for the oxidation-reduction reaction between Al(s) and Zn2+ (aq) are represented above. Based on the half-reactions, what is the coefficient for Al(s) if the equation for the oxidation-reduction reaction is balanced with the smallest whole-number coefficients? We were unable to transcribe this image
The spontaneous galvanic cell of a lead storage battery (a typical car battery) is composed of the following reduction half reactions reduced 1.69 v Pb02 (s)+ HSO, (aq)+3 Ha0 (aq) + 2 e Pbs04 (s)+5 H20) PbSO4 (s) + H3O (aq) 2 e Pb (s)+HSO (aq)+ H20 (I) E reduced 0.36 V How much current (in A) does a cell phone charger for your car use if your car dies after 14 hours of leaving the phone plugged in without...
Question 17 1 pts Given these half cell reactions: Zn+2 (aq) + 2e → Zn (s) E = -0.76 V Ag+ (aq) + e Ag (s) E° = 0.80V Write the Cell Diagram (line notation) representing the anode and cathode half reactions. Note: Use forward slash as line separators, HTML Editor BIVA -A- IE * 3 1 1 x'x, EE D D N V VD 1 2pt - Paragraph - ®
A chemist designs a galvanic cell that uses these two half-reactions: half-reaction standard reduction potential Zn(s) red -0.763 V Zn2+ (aq)+2e NO3(aq)+4 H+ (aq)+3e NO(9)+2H20(1) EO red = +0.96 V Answer the following questions about this cell. Write a balanced equation for the half-reaction that happens at the cathode. е х Write a balanced equation for the half-reaction that happens at the anode. Write a balanced equation for the overall reaction that powers the cell. Be sure the reaction is...
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