Please show all work step by step and final
answer.
Homework Answers
Add Answer to:
Please show all work step by step and final
answer.
Electro-refinement of Gold In the refinement...
Electro-refinement of Gold In the refinement of gold a basic solution of Au(CN)4 is electrolyzed. Gold...
Electro-refinement of Gold In the refinement of gold a basic solution of Au(CN)4 is electrolyzed. Gold metal and oxygen gas are produced at the electrodes. Answer questions by selecting the appropriate reaction. Which half-reaction takes place at the anode during this electrolysis? Incorrect O2 + 2H+ + 2e -> H202 Incorrect Au(CN)4 + 3e - Au + 4CN Incorrect Au + 4CN - Au(CN)4 + 3e Correct: 40H - 02 + 2H20 + 4e Which is the overall cell reaction...
Please show all work step by step and final answer. Reactions at Electrodes during Electrolysis Answer the following que...
Please show all work step by step and final
answer.
Reactions at Electrodes during Electrolysis Answer the following questions by selecting the appropriate half-reaction. Assume that in each case the experiment is performed in an electrolysis cell having electrodes made of non-reacting material. Which half-reaction will take place at the anode during the electrolysis of 1.0 M H2O2 solution containing 1.0 M H2SO4? O 02 + 4H+ + 4e - 2H20 H202 0 2 + 2H+ + 2e H2O2 +...
Please show all work step by step and final answer. Reactions at Electrodes during Electrolysis Answer...
Please show all work step by step and final
answer.
Reactions at Electrodes during Electrolysis Answer the following questions by selecting the appropriate half-reaction. Assume that in each case the experiment is performed in an electrolysis cell having electrodes made of non-reacting material. Which half-reaction will take place at the anode during the electrolysis of molten MgCl2? 20" - Cl2 + 2e Cl2 + 2e - 2014 Mg2+ + 2e Mg Mg - Mg2+ + 2e Which half-reaction will take...
Please show all work step by step and final answer. Electrolysis in Aqueous Solutions -- Overvoltage...
Please show all work step by
step and final answer.
Electrolysis in Aqueous Solutions -- Overvoltage Refer to data from a table of standard reduction potentials for common half-reactions and/or the following half-reaction to answer the questions below. 52082- + 2e → 25042- E° = 2.01 v During the electrolysis of an aqueous solution of Na2SO4, which reaction occurs at the (platinum) cathode? 2H20 + 2e - H2 + 20H SO42- + 4H+ + 2 H2O + H2SO3 2H20 0...
Please show all work step by step and final answer. Nernst Equation Applied to Half-Reactions The...
Please show all work step by step and final
answer.
Nernst Equation Applied to Half-Reactions The Nernst equation can be applied to half-reactions. Calculate the reduction potential (at 25°C) of the half-cell Cu/Cu2+ (1.8x10- M). (The half-reaction is Cu2+ + 2e Cu.) 1 pts Submit Answer Tries 0/5 Calculate the reduction potential (at 25°C) of the half-cell Mn04 (2.00x10-1 M) Mn2+ (2.50X10-2 M) at pH = 4.00. (The half-reaction is MnO4 + 8H+ + 5e Mn2+ + 4H20.) 1pts Submit...
Please show all work step by step and final answer. Selective Reduction The standard reduction potential...
Please show all work step by step and final
answer.
Selective Reduction The standard reduction potential for the half-reaction: Sn4+ + 2e + Sn2+ is +0.15 V. Consider data from the table of standard reduction potentials for common half-reactions, in your text. For a galvanic cell under standard conditions, which of the following anodic half reactions would produce, at the cathode a spontaneous reduction of Sn4+ to Sn2+ but not Sn2+ to Sn. Sn- Sn2+ + 2e Sn2+ Sn4+ +...
Please show all work step by step and final answer. Reference Electrodes The Eº value for...
Please show all work step by step and final
answer.
Reference Electrodes The Eº value for the following reaction is 0.446 V relative to the standard hydrogen electrode (SHE): Ag2 CrO4(s) + 24 + 2Ag(s) + Cro42 (aq) A chemist wishes to determine the concentration of Cro42- electrochemically. A cell is constructed consisting of a saturated calomel electrode (SCE; which has a reduction potential of 0.242 V relative to the SHE) and a silver wire coated with Ag Cro4 and...
A chemist designs a galvanic cell that uses these two half-reactions: standard reduction potential half-reaction +...
A chemist designs a galvanic cell that uses these two half-reactions: standard reduction potential half-reaction + O2(9)+4 H (aq)+4e' 2H20) = 1.23 V red Ered Fe+. (аq) Fe3(aq)+e = +0.771 V Answer the following questions about thiss cell Write a balanced equation for the half-reaction that happens at the cathode 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 spontaneous...
Please show work step by step Consider the following reaction: 2 C2H6(9) + 7 02(9) —...
Please show work step by step
Consider the following reaction: 2 C2H6(9) + 7 02(9) — 4 CO2(g) + 6H2O(1) Use standard heats of formation from Zumdahl 'Chemical Principles' 8th ed. Appendix Four pp A19 - A21. How much heat is evolved when 5.820 moles of C2H6(9) is burned in excess oxygen. Answer to 4 sig figs. Assume standard conditions. Note that, by convention, a decrease in enthalpy of the system will result in a positive quantity of heat being...
Please show all work step by step and final answer. Electrochemical Measurement of Concentration An electrochemical...
Please show all work step by step and final
answer.
Electrochemical Measurement of Concentration An electrochemical cell consists of a standard hydrogen electrode and a copper metal electrode. What is the potential of this cell at 25°C if the copper electrode is placed in a solution in which [Cu2+] = 3.6x10-4 M? 1 pts Submit Answer Tries 0/5 The copper electrode of the above cell is placed in a solution of unknown [Cu2+]. The measured potential at 25°C is 0.136...
Electro-refinement of Gold In the refinement of gold a basic solution of Au(CN)4 is electrolyzed. Gold metal and oxygen gas are produced at the electrodes. Answer questions by selecting the appropriate reaction. Which half-reaction takes place at the anode during this electrolysis? Incorrect O2 + 2H+ + 2e -> H202 Incorrect Au(CN)4 + 3e - Au + 4CN Incorrect Au + 4CN - Au(CN)4 + 3e Correct: 40H - 02 + 2H20 + 4e Which is the overall cell reaction...
Please show all work step by step and final
answer.
Reactions at Electrodes during Electrolysis Answer the following questions by selecting the appropriate half-reaction. Assume that in each case the experiment is performed in an electrolysis cell having electrodes made of non-reacting material. Which half-reaction will take place at the anode during the electrolysis of 1.0 M H2O2 solution containing 1.0 M H2SO4? O 02 + 4H+ + 4e - 2H20 H202 0 2 + 2H+ + 2e H2O2 +...
Please show all work step by step and final
answer.
Reactions at Electrodes during Electrolysis Answer the following questions by selecting the appropriate half-reaction. Assume that in each case the experiment is performed in an electrolysis cell having electrodes made of non-reacting material. Which half-reaction will take place at the anode during the electrolysis of molten MgCl2? 20" - Cl2 + 2e Cl2 + 2e - 2014 Mg2+ + 2e Mg Mg - Mg2+ + 2e Which half-reaction will take...
Please show all work step by
step and final answer.
Electrolysis in Aqueous Solutions -- Overvoltage Refer to data from a table of standard reduction potentials for common half-reactions and/or the following half-reaction to answer the questions below. 52082- + 2e → 25042- E° = 2.01 v During the electrolysis of an aqueous solution of Na2SO4, which reaction occurs at the (platinum) cathode? 2H20 + 2e - H2 + 20H SO42- + 4H+ + 2 H2O + H2SO3 2H20 0...
Please show all work step by step and final
answer.
Nernst Equation Applied to Half-Reactions The Nernst equation can be applied to half-reactions. Calculate the reduction potential (at 25°C) of the half-cell Cu/Cu2+ (1.8x10- M). (The half-reaction is Cu2+ + 2e Cu.) 1 pts Submit Answer Tries 0/5 Calculate the reduction potential (at 25°C) of the half-cell Mn04 (2.00x10-1 M) Mn2+ (2.50X10-2 M) at pH = 4.00. (The half-reaction is MnO4 + 8H+ + 5e Mn2+ + 4H20.) 1pts Submit...
Please show all work step by step and final
answer.
Selective Reduction The standard reduction potential for the half-reaction: Sn4+ + 2e + Sn2+ is +0.15 V. Consider data from the table of standard reduction potentials for common half-reactions, in your text. For a galvanic cell under standard conditions, which of the following anodic half reactions would produce, at the cathode a spontaneous reduction of Sn4+ to Sn2+ but not Sn2+ to Sn. Sn- Sn2+ + 2e Sn2+ Sn4+ +...
Please show all work step by step and final
answer.
Reference Electrodes The Eº value for the following reaction is 0.446 V relative to the standard hydrogen electrode (SHE): Ag2 CrO4(s) + 24 + 2Ag(s) + Cro42 (aq) A chemist wishes to determine the concentration of Cro42- electrochemically. A cell is constructed consisting of a saturated calomel electrode (SCE; which has a reduction potential of 0.242 V relative to the SHE) and a silver wire coated with Ag Cro4 and...
A chemist designs a galvanic cell that uses these two half-reactions: standard reduction potential half-reaction + O2(9)+4 H (aq)+4e' 2H20) = 1.23 V red Ered Fe+. (аq) Fe3(aq)+e = +0.771 V Answer the following questions about thiss cell Write a balanced equation for the half-reaction that happens at the cathode 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 spontaneous...
Please show work step by step
Consider the following reaction: 2 C2H6(9) + 7 02(9) — 4 CO2(g) + 6H2O(1) Use standard heats of formation from Zumdahl 'Chemical Principles' 8th ed. Appendix Four pp A19 - A21. How much heat is evolved when 5.820 moles of C2H6(9) is burned in excess oxygen. Answer to 4 sig figs. Assume standard conditions. Note that, by convention, a decrease in enthalpy of the system will result in a positive quantity of heat being...
Please show all work step by step and final
answer.
Electrochemical Measurement of Concentration An electrochemical cell consists of a standard hydrogen electrode and a copper metal electrode. What is the potential of this cell at 25°C if the copper electrode is placed in a solution in which [Cu2+] = 3.6x10-4 M? 1 pts Submit Answer Tries 0/5 The copper electrode of the above cell is placed in a solution of unknown [Cu2+]. The measured potential at 25°C is 0.136...
Most questions answered within 3 hours.
-
Computer Programming II CS141(Java)
Mention the appropriate relationship between following
classes:
HOD–StaffMember
Car–Ferrari
Student-Address
BankAccount–FixedAccount
House-Building...
asked 1 hour ago -
Assume one of your finals has 50 questions on it, and
lucky for you, it's all...
asked 2 hours ago -
Rice Products in Bangladesh
Business behavior is derived in large part from the basic cultural
environment...
asked 3 hours ago -
The following base sequence is found for a mRNA fragment from
wild-type E. coli: 5'- UAUCAGUAGAUAAUGUAACC-3'...
asked 4 hours ago -
For this exercise, round all regression parameters to three
decimal places.
One of the two tables...
asked 4 hours ago -
What is the 5% level of significance for mean = 3.60, standard
deviation = 0.94, and...
asked 4 hours ago -
Prior to beginning work on this discussion, please read the
article by Hayley Peterson, 15 Companies...
asked 5 hours ago -
Which pair of aqueous solutions, when mixed, will form a
precipitate?
A) NaNO3 and AgC2H3O2
B)...
asked 5 hours ago -
1-Write an algorithm to get two numbers from the user (as
inputs) and calculate the sum...
asked 8 hours ago -
Define white-collar crime. What is the difference between
offender and offense-based definitions of white-collar crime? What...
asked 9 hours ago -
Consider a reaction which is 1st order with respect to A and 1st
order with respect...
asked 9 hours ago -
c++
The length of the hypotenuse of a right-angled triangle is the
square root of the...
asked 9 hours ago