You probably should learn about oxidation numbers. Which of the following reactions are redox reactions? Oct 12, Explanation: a : barium is oxidized; magnesium is reduced. If an electode reaction has dssolved oxygen as a reactant, is the electrode an anode or a cathode?
If an electrode reaction has dissolved oxygen as a reactant, is the electrode and anode or a cathode? What balanced equation represents a redox reaction? How are redox reactions involved in electrolysis? Why are oxidation reduction reactions coupled? What do oxidation reduction reactions involve? The standard reduction potentials listed in any reference table are only valid at standard-state conditions of 1 and, typically, To calculate the cell potential at non-standard-state conditions, one uses the Nernst equation,.
Part A What is the value for the reaction quotient, Express your answer numerically. How to approach the problem In the reaction quotient, the concentrations of the aqueous products appear in the numerator, and the concentrations of the aqueous reactants appear in the denominator. Just like an equilibrium constant, , the coefficients in the balanced equation must also be considered.
Do an example conversion What Kelvin temperature corresponds to the Celsius temperature of 0? Express your answer to three significant figures and include the appropriate units.
How to approach the problem Using the table below determine the potential for each half-reaction, then add them together:. Therefore, the potential for the oxidation half-reaction has the opposite sign of the value given. Question 14 A voltaic cell is constructed that uses the following reaction and operates at :. Part A What is the emf of this cell under standard conditions? Express your answer using two significant figures. Score Summary: Your score on this assignment is You received Open navigation menu.
Close suggestions Search Search. User Settings. Skip carousel. Carousel Previous. Carousel Next. What is Scribd? Quiz 7. Uploaded by Juba W Allen. Document Information click to expand document information Description: chem 2 mastering chemistry answers. Did you find this document useful? Is this content inappropriate?
Report this Document. Description: chem 2 mastering chemistry answers. Flag for inappropriate content. Download now. Save Save Quiz 7 For Later. Related titles. Carousel Previous Carousel Next. Jump to Page. Search inside document. Quiz 7 Due: pm on Monday, November 26, Note: You will receive no credit for late submissions.
To learn more, read your instructor's Grading Policy Question 1 Determine the oxidation number for the indicated element in each of the following compounds. Part A in Express your answer as an integer. Part A If something is oxidized, it is formally losing electrons. The overall cell reaction is Part A What is being oxidized? Express your answer as a chemical expression. Correct Part G Do electrons flow from the aluminum electrode to the nickel electrode, or from the nickel to the aluminum?
Correct Part H In which directions do the cations and anions migrate through the solution? Aluminum is Part C Which statement is true? Electrode mass The oxidation half-reaction tells us that solid aluminum is being turned into aqueous aluminum ions. Part A. Express your answer using three significant figures. Express your answer using four significant figures. Finally, convert Recall that if , then Hint 2. Determine the value of E What is the value of for this reaction? Express your answer numerically in volts.
How to approach the problem Determine the potential for each half-reaction using the table, then add them together: Be aware that this table only shows reduction half-reactions. Determine the value of n What is the value of for the following reaction?
Express your answer numerically as an integer. Express your answer numerically in kelvins. Express your answer numerically in volts using two significant figures. Then, use the following equation to find : Keep in mind that standard temperature is Hint 2. Determine the value of n What value of n should be used to calculate? Question 11 Given the following reduction half-reactions: Part A Write balanced chemical equation for the oxidation of by.
Express your answer using one significant figure. To calculate the cell potential at non-standard-state conditions, one uses the Nernst equation, where is the potential in volts, is the standard potential in volts, is the gas constant, is the is the temperature in kelvin, Faraday constant, and is the number of moles of electrons transferred, is the reaction quotient.
Consider the reaction at 89 , where 2. Express your answer as an integer and include the appropriate units. How to approach the problem Using the table below determine the potential for each half-reaction, then add them together: Reduction half-reaction 0. Express your answer to two decimal places and include the appropriate units. How to approach the problem Use the Nernst equation to calculate. Plug in the values of , and that you calculated in the previous parts.
Documents Similar To Quiz 7. Juba W Allen. Abdulrahman Jijawi. Ruba Tarshne :. Matthew Campbell. Mustafa Khandgawi. Ghege Guntaran. Rikianarsyi Arrassyidinta. Jasper de Guzman.
Nutrition in Cancer Treatment Continuum of Care More From Juba W Allen. Rene Raynes. Popular in Physical Sciences. Quan Ying. DrFatema Hussain. Tensor product methods and entanglement optimization for ab initio quantum chemistry. John Bird. Jhon Estwood. Teymur Regenmaister.
Arjun Baral. Meenu Arora. Parth Shah. Mauricio Nakamura Cortez. Aldeir De Los Reyes. Kuncoro Ajos. Muhammad Ali Malik. Khalid El Masry. Rakesh Kumar. Sion Halim. Mayra Flor. Frank Nderumaki.
0コメント