why do we store sodium in kerosene oil Why is sodium kept in kerosene?

When it comes to the storage of sodium, one popular method is to keep it submerged in kerosene. But have you ever wondered why this is done? In this post, we will explore the reasons behind the use of kerosene as a storage medium for sodium.

Sodium: A Highly Reactive Element

Sodium is a highly reactive element that has a tendency to combust when exposed to air or water. This reactivity arises from its electronic structure, as it has only one electron in its outermost shell. In order to stabilize itself, sodium readily gives away this lone electron, which results in the formation of a positively charged sodium ion.

Exposure to moisture or air can lead to the formation of sodium hydroxide and sodium peroxide, both of which are highly reactive compounds. These reactions can be highly exothermic, leading to the release of heat and potentially causing fires or explosions. Hence, it becomes crucial to store sodium in a manner that prevents its contact with moisture and air.

Kerosene: The Ideal Storage Medium

Kerosene, also known as paraffin oil, serves as an ideal storage medium for sodium due to its unique properties. Firstly, kerosene is immiscible with water, meaning it does not mix with or dissolve in water. This property plays a key role in preventing sodium from coming into contact with moisture, which could trigger unwanted reactions.

Furthermore, kerosene is a non-polar solvent. This means that it does not have a positive or negative charge distribution within its molecules. Sodium, being a positively charged ion, has a natural affinity for non-polar solvents. The lack of charge in the kerosene molecules allows sodium ions to dissolve and stay suspended in the solution without undergoing any significant chemical reactions. This characteristic ensures the stability of sodium during storage.

Safe Handling Practices

When dealing with sodium, it is important to follow proper safety protocols. Handling sodium can be dangerous, as it reacts violently with water, producing hydrogen gas and releasing a significant amount of heat. Therefore, it is advisable to wear gloves and protective eyewear when working with sodium.

In addition to being stored in kerosene, sodium is often kept in sealed containers to minimize contact with moisture and air. This helps to maintain its stability and prevent any unintended reactions. It is important to note that sodium should never be stored in airtight containers, as the pressure buildup from the release of hydrogen gas could lead to explosions.

In conclusion, the use of kerosene as a storage medium for sodium is based on its ability to prevent contact with moisture and air. The non-polar nature of kerosene allows sodium ions to dissolve without undergoing any significant reactions. By following proper safety measures and handling sodium with care, we can harness its many beneficial properties while mitigating the risks associated with its reactivity.

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