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Chapter 17: Problem 36

Explain why sodium can be prepared by electrolysis.

Short Answer

Expert verified
Sodium can be prepared by electrolysis because this process allows for the separation of sodium ions from the rest of the compound by using electricity. During this process, the energy supplied by the electric current is used to drive the reaction that separates sodium ions, thereby achieving the preparation of sodium.

Step by step solution

01

Understand the Concept of Electrolysis

Electrolysis involves the use of an electric current to cause a non-spontaneous reaction. In simpler terms, electrolysis can be used to force a chemical reaction to occur that would not happen naturally. This is achieved by passing electricity through a substance and subsequently breaking down the substance.
02

Understand the Reaction of Sodium

Sodium is a highly reactive element that won't naturally occur in its pure form in nature. Instead, it's typically found combined with other elements in compounds. Sodium Chloride, for example, is a common compound we consume in the form of table salt. Electrolysis is used to separate Sodium from Chlorine in this compound.
03

Explain How Electrolysis Works for Sodium

For the electrolysis of Sodium Chloride or any sodium compound, the compound is usually in a molten state or an aqueous solution. When the electric current is passed, positively charged sodium ions move towards the negative electrode (cathode), where they gain electrons to form sodium atoms. The formation of these atoms indicates the separation of sodium from the compound.
04

Conclusion

Therefore, through electrolysis, it becomes possible to obtain sodium in its pure form. The process provides the energy necessary for the reaction to happen, which wouldn't occur naturally due to sodium's reactive nature.

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