Answered: The following materials were used to…

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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The following materials were used to make fake gold coins (see attached image). What was used in this process, additive or displacement plating, and why?

Additive Plating

A plating reaction where metal cations are reduced by an electron donor in solution. The reduced cations coat the surface of an object.

Displacement Plating

A plating reaction is where metal cations are reduced by metals on the surface of an object. The reduced metal cations become neutral atoms and coat the object, replacing the oxidized metal atoms that become metal cations.

The Secret Service is now preparing to prosecute the suspects in federal court.
The evidence from the warehouse is shown below.
As a forensic scientist, it is your job to prove how these materials were used to make the coins
appear gold.
We need you to identify and replicate the methods that the suspects used.
Copper Coins
Zhe Metal
Zinc Metal
Coins that look silver
Zinc Chloride
Solution
Coins that look gold

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