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can you explain why the total number of moles has to be calculated? And how do you know that Br- is in excess?

can you explain why the total number of moles has to be calculated? And how do you know that Br- is in excess?

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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From Principles of Instrumental Analysis, 7

Follow up question for 22-5(d): 

For part D, can you explain why the total number of moles has to be calculated?  And how do you know that Br- is in excess?

22-5 Calculate the potential of a silver electrode in contact with the following: a solution that is 0.0255 M in I₂ and saturated with Agl. (a) (b) a solution that is 0.0035 M in CN and 0.0550 M in Ag(CN)₂. (c) the solution that results from mixing 25.0 mL of 0.0500 M KBr with 20.0 mL of 0.100 M Ag. (d) the solution that results from mixing 25.0 mL of 0.0500 M Ag with 20.0 mL of 0.100 M KBr.
Transcribed Image Text:22-5 Calculate the potential of a silver electrode in contact with the following: a solution that is 0.0255 M in I₂ and saturated with Agl. (a) (b) a solution that is 0.0035 M in CN and 0.0550 M in Ag(CN)₂. (c) the solution that results from mixing 25.0 mL of 0.0500 M KBr with 20.0 mL of 0.100 M Ag. (d) the solution that results from mixing 25.0 mL of 0.0500 M Ag with 20.0 mL of 0.100 M KBr.
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