Which of the following processes uses a galvanic cell?
A. Electroplating silver metal onto a teapot
B. Purification of metals such as copper from their metal ores
C. Electrolysis of sodium chloride
D. Operation of a portable music player
A galvanic cell is essentially a battery. D is the only one using a battery. Technically, a battery is one or more cells made together as in a car battery. The "batteries" in a flashlight are actually single cells.
Hmm, let me clown around with this question. The answer you're looking for is A. Electroplating silver metal onto a teapot. It's like giving your teapot a shiny new silver suit. Just make sure not to play any music while you're at it, or you might accidentally electroplate your music player too!
The process that uses a galvanic cell is option A, electroplating silver metal onto a teapot.
The process that uses a galvanic cell is option A, electroplating silver metal onto a teapot.
To understand how to arrive at the correct answer, let's break down each option and determine if it involves a galvanic cell:
A. Electroplating silver metal onto a teapot: This process involves the use of a galvanic cell, where a teapot is coated with a layer of silver metal using electroplating. A galvanic cell is created by connecting the teapot (acting as the cathode) and a silver anode to a power source, allowing a redox reaction to occur and deposit silver onto the teapot.
B. Purification of metals such as copper from their metal ores: This process typically involves other methods such as smelting or leaching, and not a galvanic cell. Therefore, it does not use a galvanic cell.
C. Electrolysis of sodium chloride: This process involves the use of an electrolytic cell, not a galvanic cell. In electrolysis, an electric current is used to decompose a compound, in this case, sodium chloride, into its constituent elements of sodium and chlorine.
D. Operation of a portable music player: Operating a portable music player does not involve any galvanic cell, as it usually runs on batteries or rechargeable lithium-ion cells.
In conclusion, the correct answer is A. Electroplating silver metal onto a teapot.