Which of the following will be applied when a metal Y is used to electroplate another metal X in electrolysis?
X is the anode and very high current is used
X is the anode and Y is the cathode
Y is the cathode and X is the anode
Y is the anode and very high current is used
Explanation
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Let's break down the process of electroplating to figure out the correct answer!
Electroplating Basics
Electroplating is a process where you use electricity to coat one metal (like X) with a thin layer of another metal (like Y). Think of it like giving metal X a "shiny new coat" of metal Y.
What Happens at the Anode and Cathode?
* Anode: This is the positive electrode. The metal you want to use for coating (metal Y) is connected to the anode. At the anode, metal Y loses electrons and dissolves into the solution.
* Cathode: This is the negative electrode. The metal you want to coat (metal X) is connected to the cathode. At the cathode, the dissolved metal Y gains electrons and gets deposited (plated) onto metal X.
Why High Current?
A higher current means more electrons are flowing in the circuit. This leads to a faster rate of metal Y dissolving at the anode and depositing onto metal X.
Putting It All Together
Given this information, let's look at the options:
* A) X is the anode and very high current is used: This is incorrect. X should be the cathode to be coated.
* B) X is the anode and Y is the cathode: Incorrect. X is the cathode, and Y is the anode.
* C) Y is the cathode and X is the anode: Incorrect. Y is the anode, and X is the cathode.
* D) Y is the anode and very high current is used: This is correct! Y is the anode (where it dissolves), and a high current helps the process.
Therefore, the correct answer is D.
Note:
When electroplating a metal,
The metal to be electroplated is the Cathode.
The one that will be used to electroplate the metal is the anode.
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