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The left half-reaction of the cell drawn here can be written in either of two ways: (1)

Chapter 13, Problem 13-D

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QUESTION:

The left half-reaction of the cell drawn here can be written in either of two ways: (1) (2) The right half-cell reaction is (3) (a) Using Reactions 2 and 3, calculate E and write the Nernst equation for the cell. (b) Use the value of Ksp for AgI to compute [Ag] and find the cell voltage. By the reasoning in Figure 13-8, in which direction do electrons flow? (c) Suppose, instead, that you wish to describe the cell with Reactions 1 and 3. We know that the cell voltage (E, not E ) must be the same, no matter which description we use. Write the Nernst equation for Reactions 1 and 3 and use it to find E in Reaction 1. Compare your answer with the value in Appendix H. Salt bridge + V I (aq) Ag wire coated with Agl(s) Ag(s) Agl(s) Nal (0.10 M) HCI (0.10 M) H2(g, 0.20 bar) Pt(s) Pt H+ (aq) H2(g) in H e 1 2 H2(g) Ag

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QUESTION:

The left half-reaction of the cell drawn here can be written in either of two ways: (1) (2) The right half-cell reaction is (3) (a) Using Reactions 2 and 3, calculate E and write the Nernst equation for the cell. (b) Use the value of Ksp for AgI to compute [Ag] and find the cell voltage. By the reasoning in Figure 13-8, in which direction do electrons flow? (c) Suppose, instead, that you wish to describe the cell with Reactions 1 and 3. We know that the cell voltage (E, not E ) must be the same, no matter which description we use. Write the Nernst equation for Reactions 1 and 3 and use it to find E in Reaction 1. Compare your answer with the value in Appendix H. Salt bridge + V I (aq) Ag wire coated with Agl(s) Ag(s) Agl(s) Nal (0.10 M) HCI (0.10 M) H2(g, 0.20 bar) Pt(s) Pt H+ (aq) H2(g) in H e 1 2 H2(g) Ag

ANSWER:

Step 1 of 3

a)

Oxidation half-reaction:
                                                         
 

And the value of  

Reduction-half reaction:

                                                                                                     

And the value of

Since 2 electrons are transferred, then the value of n = 2

The Nernst equation is given as,

                                                                                                                   

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