Homework Answers
Add Answer to:
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
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
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...
Consider a galvanic electrochemical cell constructed using Cr/Cr³⁺ and Zn/Zn²⁺ at 25 °C. The following half-reactions...
Consider a galvanic electrochemical cell constructed using Cr/Cr³⁺ and Zn/Zn²⁺ at 25 °C. The following half-reactions are provided for each metal: Cr³⁺(aq) + 3 e⁻ → Cr(s) E°red = -0.744 V Zn²⁺(aq) + 2 e⁻ → Zn(s) E°red = -0.763 V which half reaction takes place at the anode which is the standar cell potential write the balance equation for the overall reaction in acidic sol What is the cell potential for this cell at 25 °C when [Zn²⁺] =...
4. Which of the following statements about the voltaic cell shown below is correct? Zn(s)[Zn** (aq)||...
4. Which of the following statements about the voltaic cell shown below is correct? Zn(s)[Zn** (aq)|| Cu** (aq)|Cu(s) (a) The oxidation half-reaction is clearly Zn(s) ® Zn** (aq) + 2 e. (b) The oxidation half-reaction is clearly Zn() Zn" (aq) +le. (C) The oxidation half-reaction could not be anything other than Cu(s) ® Cu (aq) +2 e. (d) It is obvious that the oxidation half-reaction is Zn(s) ® Cu(s). 5. Which of the following statements about the voltaic cell shown...
#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...
4. Which of the following statements about the voltaic cell shown below is correct? Zn(s)[Zn** (aq)|| Cu** (aq)|Cu(s) (a) The oxidation half-reaction is clearly Zn(s) ® Zn** (aq) + 2 e. (b) The oxidation half-reaction is clearly Zn() Zn" (aq) +le. (C) The oxidation half-reaction could not be anything other than Cu(s) ® Cu (aq) +2 e. (d) It is obvious that the oxidation half-reaction is Zn(s) ® Cu(s). 5. Which of the following statements about the voltaic cell shown...
Most questions answered within 3 hours.
-
How much must I invest today if I want to withdraw 1/3 of my
original investment...
asked 1 hour ago -
What is meant by a “term premium”?
What can explain such a premium? Is it a...
asked 3 hours ago -
23. Which molecule has only covalent bonds? A. CO2 B. Al2O3 C.
Mg3N2
24. The octet...
asked 3 hours ago -
the
total pressure for a mixture of N2O4 and NO2 is 2.20 atm. If Kp=
7.10...
asked 3 hours ago -
Delaware Corp. prepared a master budget that included $22,385
for direct materials, $28,600 for direct labor,...
asked 3 hours ago -
For pesticide HCB (hexachlorobenzene), its logarithmic partition
coefficient log Kow is 5.6. What would be the...
asked 3 hours ago -
A chemist requires 0.422 mil Na2CO3 for a reaction. How many
grams does this correspond to?
asked 3 hours ago -
If the vapor pressure of carvone is approximately 9.4 torr at 99
°C, approximately how much...
asked 4 hours ago -
A juice bottling company is carrying out a test at 10%
significance that the mean population...
asked 4 hours ago -
What is the reflectivity (in percent) needed to keep water at a
temperature near its freezing...
asked 4 hours ago -
Suppose that the average surface temperature of Earth is 300K.
Assume this is uniform over its...
asked 4 hours ago -
Draw the condensed structural formula for alkenes and alkynes or
the line-angle structural formula for cycloalkenes...
asked 4 hours ago