Chapter 21: Q21.94 (page 922)
Identify those elements that can be prepared by electrolysis of their aqueous salts: strontium, gold, tin, chlorine.
Chlorine, gold, and tin elements that can be prepared by electrolysis of their aqueous salts.
Over 30 million students worldwide already upgrade their learning with Vaia!
All the tools & learning materials you need for study success - in one app.
Get started for free
In Appendix D, standard electrode potentials range from aboutto . Thus, it might seem possible to use a half-cell from each end of this range to construct a cell with a voltage of approximately. However, most commercial aqueous voltaic cells havevalues ofto. Why are there no aqueous cells with significantly higher potentials?
A chemist designs an ion-specific probe for measuring [ ] in an NaCl solution saturated with AgCl. One half-cell has an Ag-wire electrode immersed in the unknown AgCl saturated NaCl solution. It is connected through a salt bridge to the other half-cell, which has a calomel reference electrode [a platinum wire immersed in a paste of mercury and calomel ( )] in a saturated KCl solution. The measured is V. (a) Given the following standard half-reactions, calculate [ ].
Calomel:
Silver:
(Hint: Assume [ ] is so high that it is essentially constant.) (b) A mining engineer wants an ore sample analyzed with the - selective probe. After pre-treating the ore sample, the chemist measures the cell voltage as V. What is [ ]?
Why do steel bridge-supports rust at the waterline but not above or below it?
What is the value of the equilibrium constant for the reaction between each pair at ?
In the electrolysis of a molten mixture of NaCl and, identify the product that forms at the anode and at the cathode.
What do you think about this solution?
We value your feedback to improve our textbook solutions.
