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Angelina_Jolie [31]
3 years ago
14

Metals can be highly purified using electrolysis. Which equation best reflects the overall process of purifying copper?

Chemistry
2 answers:
WINSTONCH [101]3 years ago
7 0

Answer: The answer is D.  Cu(s)anode ---> Cu(s)cathode

Explanation: I just took the quiz

makvit [3.9K]3 years ago
3 0

Answer:

A. Cu^+2(aq)cathode ---> Cu^+2(aq)anode

Explanation:

Electrolysis is the process in which current is passed through a solution thereby causing a chemical change at the anode and cathode. Copper is being purified using electrolysis by using impure copper at the anode and pure copper at the cathode. This pure and impure copper are placed in a copper(ii)sulfate electrolyte solution and dc current is made to pass through it.  The resulting changes at the anode and cathode are given by the equation:

cathode: Cu²⁺  + 2e⁻    ⇒     Cu

anode:    Cu     ⇒       Cu²⁺  + 2e⁻

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An ionic compound forms when a metal bonds with a non-metallic element. Metals usually form the cation and non-metal anions. Chromium has an oxidation number of +3 in the compound and charge on hydroxide ion is -1.

Cation here is Cr^{3+}

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